IP Library Granted Patent US 5,640,135
Granted Patent Utility
US 5,640,135 · App. 08/238,069

Sectional ferrite core construction for mechanical stress relief in inductive charging systems

Inventors: John T. Hall, Herbert J. Tanzer, George R. Woody
Patented Case View Patent ↗
Granted: Jun 17, 1997 Filed: Apr 29, 1994
Inventors
John T. Hall
Herbert J. Tanzer
George R. Woody
Assignee (at issue)
DELCO ELECTRONICS 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 5,640,135
App. No.
08/238,069
Filed
1994-04-29
Granted
1997-06-17
Kind
A