Granted Patent
Utility
US 4,663,541 · App. 06/713,334
Phase-shift stabilized frequency multiplier
Inventor:
Vernon L. Larrowe
Patented Case
View Patent ↗
Granted: May 5, 1987
Filed: Mar 18, 1985
Inventor
Vernon L. Larrowe
Assignee (at issue)
Environmental Research Institute
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.