Granted Patent
Utility
US 4,420,714 · App. 06/308,151
Apparatus for continuously incrementing an output member
Inventors:
Christian C. Petersen, Bernard C. Westgate, Jr.
Patented Case
View Patent ↗
Granted: Dec 13, 1983
Filed: Oct 2, 1981
Inventors
Christian C. Petersen
Bernard C. Westgate, Jr.
Assignee (at issue)
Polaroid Corporation
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.