Title: Artificial millstone
Patent number: 4,753
Date granted: 9/10/1846
View this patent at the USPTO.
Inventor: Ezekiel Cutter
Inventor: Stephen Blanchard
Title: Artificial millstone
Patent number: 4,753
Date granted: 9/10/1846
View this patent at the USPTO.
Inventor: Ezekiel Cutter
Inventor: Stephen Blanchard