Granted Patent
Utility
US 4,802,372 · App. 06/747,121
Selectable ratio transmission and visual identification of the ratio
Inventors:
Lawrence R. Harrod, Michael R. Siebern
Patented Case
View Patent ↗
Granted: Feb 7, 1989
Filed: Jun 20, 1985
Inventors
Lawrence R. Harrod
Michael R. Siebern
Assignee (at issue)
Kransco
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.