IP Library › Granted Patent US 4,759,178
Granted Patent Utility
US 4,759,178 · App. 07/026,829

Aircraft auxiliary power unit

Inventor: John R. Joy
Patented Case View Patent ↗
Granted: Jul 26, 1988 Filed: Mar 17, 1987
Inventor
John R. Joy
Assignee (at issue)
WILLIAMS INTERNATIONAL CO., L.L.C.

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 4,759,178
App. No.
07/026,829
Filed
1987-03-17
Granted
1988-07-26
Kind
A