Granted Patent
Utility
US 4,540,899 · App. 06/431,057
Hammer drive circuit using power MOSFETs
Inventor:
Brian R. Pelly
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Sep 30, 1982
Inventor
Brian R. Pelly
Assignee (at issue)
International Rectifier 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.