IP Library Granted Patent US 4,440,979
Granted Patent Utility
US 4,440,979 · App. 06/373,814

Current sink for DPT channel unit

Inventors: Gregor D. McGibbon, Kenneth K. Yu
Patented Case View Patent ↗
Granted: Apr 3, 1984 Filed: May 3, 1982
Inventors
Gregor D. McGibbon
Kenneth K. Yu
Assignee (at issue)
GTE Automatic Electric Incorporated

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 4,440,979
App. No.
06/373,814
Filed
1982-05-03
Granted
1984-04-03
Kind
A