Granted Patent
Utility
US 5,052,461 · App. 07/492,968
Security gate operable with one hand
Inventor:
Carl M. Stern
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Mar 13, 1990
Inventor
Carl M. Stern
Assignee (at issue)
Innova Development 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.