IP Library Granted Patent US 4,364,231
Granted Patent Utility
US 4,364,231 · App. 06/142,944

Compound master brake cylinder

Inventors: Robert M. Dwyer, Edwin J. Skiba
Patented Case View Patent ↗
Granted: Dec 21, 1982 Filed: Apr 23, 1980
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 4,364,231
App. No.
06/142,944
Filed
1980-04-23
Granted
1982-12-21
Kind
A