Granted Patent
Utility
US 4,358,721 · App. 06/151,559
Bridge positioning device
Inventor:
Aaron V. Farr
Patented Case
View Patent ↗
Granted: Nov 9, 1982
Filed: May 20, 1980
Inventor
Aaron V. Farr
Assignee (at issue)
Abex 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.