IP Library Granted Patent US 4,965,509
Granted Patent Utility
US 4,965,509 · App. 07/310,806

Quasi-constant gate drive circuit

Inventor: David J. Oldham
Patented Case View Patent ↗
Granted: Oct 23, 1990 Filed: Feb 13, 1989
Inventor
David J. Oldham
Assignee (at issue)
Lutron Electronics Co., 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 4,965,509
App. No.
07/310,806
Filed
1989-02-13
Granted
1990-10-23
Kind
A