Granted Patent
Utility
US 4,241,497 · App. 06/002,507
P.C. Board lead trimming method
Inventor:
Edward F. Du Bois
Patented Case
View Patent ↗
Granted: Dec 30, 1980
Filed: Jan 11, 1979
Inventor
Edward F. Du Bois
Assignee (at issue)
The Singer Company Limited
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.