Granted Patent
Utility
US 4,223,249 · App. 05/851,488
Pulse generating means
Inventor:
Philip V. Eshelman
Patented Case
View Patent ↗
Granted: Sep 16, 1980
Filed: Dec 21, 1977
Inventor
Philip V. Eshelman
Assignee (at issue)
Colt Industries Operating 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.