Granted Patent
Utility
US 4,516,323 · App. 06/534,760
Rotary hand knife and parts therefor
Inventors:
Louis A. Bettcher, Richard B. Decker
Patented Case
View Patent ↗
Granted: May 14, 1985
Filed: Sep 22, 1983
Inventors
Louis A. Bettcher
Richard B. Decker
Assignee (at issue)
Bettcher Industries, Inc.
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.