IP Library › Granted Patent US 5,234,377
Granted Patent Utility
US 5,234,377 · App. 07/960,228

Composite spring with improved ends

Inventors: Dale Arden Stretch, Edward J. Hummelt
Patented Case View Patent ↗
Granted: Aug 10, 1993 Filed: Oct 13, 1992
Inventors
Dale Arden Stretch
Edward J. Hummelt
Assignee (at issue)
Eaton Corporation

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 5,234,377
App. No.
07/960,228
Filed
1992-10-13
Granted
1993-08-10
Kind
A