Granted Patent
Utility
US 4,561,684 · App. 06/461,614
Automatic deadbolt
Inventor:
Robert A. Marotto
Patented Case
View Patent ↗
Granted: Dec 31, 1985
Filed: Jan 27, 1983
Inventor
Robert A. Marotto
Assignee (at issue)
KYSOR INDUSTRIAL 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.