Granted Patent
Utility
US 4,043,418 · App. 05/644,549
Reverse direction guidance system for lift truck
Inventor:
Thomas R. Blakeslee
Patented Case
View Patent ↗
Granted: Aug 23, 1977
Filed: Dec 29, 1975
Inventor
Thomas R. Blakeslee
Assignee (at issue)
Logisticon, 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.