Granted Patent
Utility
US 4,937,548 · App. 07/426,415
Circuit breaker
Inventor:
Bruce C. Sdunek
Patented Case
View Patent ↗
Granted: Jun 26, 1990
Filed: Oct 25, 1989
Inventor
Bruce C. Sdunek
Assignee (at issue)
Mechanical Products
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.