A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
| Inventor Name | City | State | |
|---|---|---|---|
| Pace, Sr., Henry | Cincinnati | OH | View patents |
| Paddock, Walter | Cincinnati | OH | View patents |
| Paine, Rufus | Cincinnati | OH | View patents |
| Palmer, J. | Cincinnati | OH | View patents |
| Palmer, John | Cincinnati | OH | View patents |
| Palmer, Otto | Cincinnati | OH | View patents |
| Palmer, Otto | Cincinnati | OH | View patents |
| Passel, George | Cincinnati | OH | View patents |
| Patterson, James | Cincinnati | OH | View patents |
| Patterson, James | Cincinnati | OH | View patents |
| Patterson, Robert | Cincinnati | OH | View patents |
| Paul, Frederick | Cincinnati | OH | View patents |
| Paxton, Charles | Loveland | OH | View patents |
| Peacock, Adonijah | Cincinnati | OH | View patents |
| Peacock, Simeon | Cincinnati | OH | View patents |
| Pearce, Henry | Cincinnati | OH | View patents |
| Pearce, Henry | Cincinnati | OH | View patents |
| Pearson, Samuel | Cincinnati | OH | View patents |
| Pearson, Samuel | Cincinnati | OH | View patents |
| Pease, Oscar | Xenia | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peckover, Joseph | Cincinnati | OH | View patents |
| Peet, John | Cincinnati | OH | View patents |
| Pelton, Lorenzo | Harrison | OH | View patents |
| Penny, Richard | Cincinnati | OH | View patents |
| Perry, Oliver | Cincinnati | OH | View patents |
| Peters, Charles | Cincinnati | OH | View patents |
| Peters, Charles | Cincinnati | OH | View patents |
| Peters, Francis | Cincinnati | OH | View patents |
| Peterson, Jacob | Springdale | OH | View patents |
| Pfau, Jacob | Cincinnati | OH | View patents |
| Phares, Joseph | Cincinnati | OH | View patents |
| Phelps, Samuel | Cincinnati | OH | View patents |
| Phelps, Samuel | Cincinnati | OH | View patents |
| Phelps, Samuel | Cincinnati | OH | View patents |
| Phillips, Robert | Cincinnati | OH | View patents |
| Pierce, Ephraim | Cincinnati | OH | View patents |
| Pike, S. | Cincinnati | OH | View patents |
| Pike, S. | Cincinnati | OH | View patents |
| Piper, D. | Cincinnati | OH | View patents |
| Platt, Anson | Cincinnati | OH | View patents |
| Platt, Anson | Cincinnati | OH | View patents |
| Platt, Anson | Cincinnati | OH | View patents |
| Plum, L. | Cincinnati | OH | View patents |
| Poage, John | Cincinnati | OH | View patents |
| Poage, John | Cincinnati | OH | View patents |
| Poage, John | Cincinnati | OH | View patents |
| Poage, John | Cincinnati | OH | View patents |
| Poage, John | Cincinnati | OH | View patents |
| Pollock, Collin | Cincinnati | OH | View patents |
| Porteous, John | Cincinnati | OH | View patents |
| Porteous, John | Cincinnati | OH | View patents |
| Porter, G. | Cincinnati | OH | View patents |
| Post, H. | Cincinnati | OH | View patents |
| Post, H. | Cincinnati | OH | View patents |
| Post, Henry | Cincinnati | OH | View patents |
| Potts, George | Cincinnati | OH | View patents |
| Powell, J. | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, James | Cincinnati | OH | View patents |
| Powell, Joseph | Cincinnati | OH | View patents |
| Powell, Palemon | Cincinnati | OH | View patents |
| Powers, R. | Cincinnati | OH | View patents |
| Price, J. | Cincinnati | OH | View patents |
| Price, William | Cincinnati | OH | View patents |
| Price, William | Cincinnati | OH | View patents |
| Price, William | Cincinnati | OH | View patents |
| Price, William | Cincinnati | OH | View patents |
| Price, William | Cincinnati | OH | View patents |
| Pudder, Henry | Dayton | KY | View patents |
| Pullam, R. | Cincinnati | OH | View patents |
| Pullan, Richard | Cincinnati | OH | View patents |
| Pullan, Richard | Cincinnati | OH | View patents |
| Pullan, Richard | Cincinnati | OH | View patents |
| Pullan, Richard | Cincinnati | OH | View patents |
| Pulte, Joseph | Cincinnati | OH | View patents |
| Pulte, Joseph | Cincinnati | OH | View patents |
| Pulte, Mary | Cincinnati | OH | View patents |
| Pump & Machine Co., McGowan Bros. | Cincinnati | OH | View patents |
| Purlier, H. | Cincinnati | OH | View patents |