Granted Patent
Utility
US 4,565,476 · App. 06/570,972
Internal hydraulic clamp
Inventor:
Donald F. Smith
Patented Case
View Patent ↗
Granted: Jan 21, 1986
Filed: Jan 16, 1984
Inventor
Donald F. Smith
Assignee (at issue)
General Dynamics Corporation
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.