Granted Patent
Utility
US 4,814,966 · App. 07/103,095
Shunt switched resistor regulator with diode snubber
Inventor:
John P. Ekstrand
Patented Case
View Patent ↗
Granted: Mar 21, 1989
Filed: Sep 30, 1987
Inventor
John P. Ekstrand
Assignee (at issue)
Spectra-Physics, Inc.
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.