Granted Patent
Utility
US 4,687,383 · App. 06/845,866
Insert rotary cutter
Inventors:
Hiroshi Shimomura, Tatsuo Arai
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Mar 28, 1986
Inventors
Hiroshi Shimomura
Tatsuo Arai
Assignee (at issue)
Mitsubishi Kinzoku Kabushiki Kaisha
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.