IP Library Granted Patent US 4,796,573
Granted Patent Utility
US 4,796,573 · App. 07/103,879

Hydraulic engine valve lifter assembly

Inventors: Russell J. Wakeman, Stephen F. Shea
Patented Case View Patent ↗
Granted: Jan 10, 1989 Filed: Oct 2, 1987
Inventors
Russell J. Wakeman
Stephen F. Shea
Assignee (at issue)
AlliedSignal, 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 4,796,573
App. No.
07/103,879
Filed
1987-10-02
Granted
1989-01-10
Kind
A