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.