IP Library › Granted Patent US 4,771,866
Granted Patent Utility
US 4,771,866 · App. 07/054,106

Shock absorber with proximity switch

Inventors: Robert J. Heideman, Virgil J. Van Parys
Patented Case View Patent ↗
Granted: Sep 20, 1988 Filed: May 20, 1987
Inventors
Robert J. Heideman
Virgil J. Van Parys
Assignee (at issue)
Enertrols, Inc.

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 4,771,866
App. No.
07/054,106
Filed
1987-05-20
Granted
1988-09-20
Kind
A