IP Library › Granted Patent US 4,870,534
Granted Patent Utility
US 4,870,534 · App. 07/241,018

Power line surge suppressor

Inventor: Jack R. Harford
Patented Case View Patent ↗
Granted: Sep 26, 1989 Filed: Sep 2, 1988
Inventor
Jack R. Harford

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 4,870,534
App. No.
07/241,018
Filed
1988-09-02
Granted
1989-09-26
Kind
A