Granted Patent
Utility
US 4,671,549 · App. 06/759,223
Tubular automatic deadbolt latch
Inventors:
Robert A. Marotto, Vincent Michael Kemp, Henry A. Holmes, Jr.
Patented Case
View Patent ↗
Granted: Jun 9, 1987
Filed: Jul 26, 1985
Inventors
Robert A. Marotto
Vincent Michael Kemp
Henry A. Holmes, Jr.
Assignee (at issue)
Dexter Lock 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.