Granted Patent
Utility
US 4,240,024 · App. 06/012,254
Temperature compensated current source
Inventor:
Tom L. Blackburn
Patented Case
View Patent ↗
Granted: Dec 16, 1980
Filed: Feb 15, 1979
Inventor
Tom L. Blackburn
Assignee (at issue)
GTE Automatic Electric Laboratories, 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.