Granted Patent
Utility
US 4,894,316 · App. 07/210,034
Adjustment of thin film capacitors
Inventor:
Richard A. Hjulstrom
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Jun 22, 1988
Inventor
Richard A. Hjulstrom
Assignee (at issue)
Electro-Films 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.