Title: Oscillating pump
Patent number: 19,680
Date granted: 3/23/1858
View this patent at the USPTO.
Inventor: Ezra Cope
Inventor: Isaac Bragg
Title: Oscillating pump
Patent number: 19,680
Date granted: 3/23/1858
View this patent at the USPTO.
Inventor: Ezra Cope
Inventor: Isaac Bragg