Granted Patent
Utility
US 4,501,378 · App. 06/551,094
Resilient detented lid latch
Inventor:
Robert C. Berfield
Patented Case
View Patent ↗
Granted: Feb 26, 1985
Filed: Nov 14, 1983
Inventor
Robert C. Berfield
Assignee (at issue)
SHOP VAC 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.