Granted Patent
Utility
US 4,040,500 · App. 05/629,491
Guidance system for lift truck
Inventor:
Thomas R. Blakeslee
Patented Case
View Patent ↗
Granted: Aug 9, 1977
Filed: Nov 6, 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.