Granted Patent
Utility
US 4,800,767 · App. 07/058,989
Acceleration control device for a hydraulic drive unit
Inventor:
Daniel P. Abrahamson
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Jun 8, 1987
Inventor
Daniel P. Abrahamson
Assignee (at issue)
Builders Equipment Company
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.