Granted Patent
Utility
US 4,475,857 · App. 06/346,676
Detent Apparatus
Inventor:
Syozo Hiraiwa
Patented Case
View Patent ↗
Granted: Oct 9, 1984
Filed: Feb 8, 1982
Inventor
Syozo Hiraiwa
Assignee (at issue)
Diesel Kiki Co., Ltd.
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.