Granted Patent
Utility
US 4,436,152 · App. 06/422,739
Shifting tool
Inventors:
Ernest P. Fisher, Jr., William R. Welch
Patented Case
View Patent ↗
Granted: Mar 13, 1984
Filed: Sep 24, 1982
Inventors
Ernest P. Fisher, Jr.
William R. Welch
Assignee (at issue)
Otis Engineering 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.