Title: Lock up safety valve
Patent number: 62,477
Date granted: 2/26/1867
View this patent at the USPTO.
Inventor: Daniel Coppin
Inventor: Gilbert Clemens
Title: Lock up safety valve
Patent number: 62,477
Date granted: 2/26/1867
View this patent at the USPTO.
Inventor: Daniel Coppin
Inventor: Gilbert Clemens