Granted Patent
Utility
US 4,456,892 · App. 06/320,424
Temperature compensating circuit for use with crystal oscillators and the like
Inventor:
Johannes J. Vandergraaf
Patented Case
View Patent ↗
Granted: Jun 26, 1984
Filed: Nov 12, 1981
Inventor
Johannes J. Vandergraaf
Assignee (at issue)
General Electric Company
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.