Granted Patent
Utility
US 4,407,312 · App. 06/153,912
Fare collection system and components thereof
Inventors:
Jose E. Davila, Jim H. Gomez
Patented Case
View Patent ↗
Granted: Oct 4, 1983
Filed: May 28, 1980
Inventors
Jose E. Davila
Jim H. Gomez
Assignee (at issue)
General Railway Signal 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.