Granted Patent
Utility
US 4,291,291 · App. 06/076,668
Circuit breaker provided with collapsible telescoping linkage
Inventor:
Donald K. Merchant
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Sep 18, 1979
Inventor
Donald K. Merchant
Assignee (at issue)
North American Philips Controls 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.