Granted Patent
Utility
US 4,304,520 · App. 06/043,502
Compound boom latch
Inventor:
Floyd A. Schmitz
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: May 29, 1979
Inventor
Floyd A. Schmitz
Assignee (at issue)
J. I. Case Company
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.