Granted Patent
Utility
US 4,779,908 · App. 06/926,576
Latch bolt deadlocking mechanism
Inventors:
William R. Foshee, Lyn E. Hamel
Patented Case
View Patent ↗
Granted: Oct 25, 1988
Filed: Nov 4, 1986
Inventors
William R. Foshee
Lyn E. Hamel
Assignee (at issue)
Best Lock 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.