Granted Patent
Utility
US 4,517,820 · App. 06/506,659
Blind rivet tool
Inventors:
Richard W. Oefinger, Richard J. Babyak
Patented Case
View Patent ↗
Granted: May 21, 1985
Filed: Jun 22, 1983
Inventors
Richard W. Oefinger
Richard J. Babyak
Assignee (at issue)
USM Holding AG
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.