Granted Patent
Utility
US 5,165,828 · App. 07/743,701
Cam-actuated thread tapper
Inventors:
Richard Colin Green, Glen Pierson, Kenneth A. Swanstrom
Patented Case
View Patent ↗
Granted: Nov 24, 1992
Filed: Aug 12, 1991
Inventors
Richard Colin Green
Glen Pierson
Kenneth A. Swanstrom
Assignee (at issue)
Penn Engineering & Manufacturing Corp.
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.