Granted Patent
Utility
US 4,291,375 · App. 06/025,514
Portable programmer-reader unit for programmable time registering electric energy meters
Inventor:
Thomas Wolf
Patented Case
View Patent ↗
Granted: Sep 22, 1981
Filed: Mar 30, 1979
Inventor
Thomas Wolf
Assignee (at issue)
Westinghouse Electric Company LLC
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.