IP Library › Granted Patent US 4,756,669
Granted Patent Utility
US 4,756,669 · App. 07/076,806

Air compressor control apparatus

Inventor: Yasuhisa Hata
Patented Case View Patent ↗
Granted: Jul 12, 1988 Filed: Jul 23, 1987
Inventor
Yasuhisa Hata
Assignee (at issue)
Nippon Air Brake Co., Ltd.

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 4,756,669
App. No.
07/076,806
Filed
1987-07-23
Granted
1988-07-12
Kind
A