Granted Patent
Utility
US 6,138,959 · App. 09/167,106
Low profile switch machine gear box
Inventors:
Leonard Wydotis, Marvin R. Wohlhueter, Kevin McQuistian
Patented Case
View Patent ↗
Granted: Oct 31, 2000
Filed: Oct 6, 1998
Inventors
Leonard Wydotis
Marvin R. Wohlhueter
Kevin McQuistian
Assignee (at issue)
Union Switch & Signal, Inc.
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.