IP Library › Granted Patent US 4,425,970
Granted Patent Utility
US 4,425,970 · App. 06/304,287

Tractor draft sensing apparatus

Inventors: Robert M. Dwyer, Edwin J. Skiba
Patented Case View Patent ↗
Granted: Jan 17, 1984 Filed: Sep 21, 1981
Inventors
Robert M. Dwyer
Edwin J. Skiba
Assignee (at issue)
Massey Ferguson Group Limited

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.

Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 4,425,970
App. No.
06/304,287
Filed
1981-09-21
Granted
1984-01-17
Kind
A