Granted Patent
Utility
US 4,381,441 · App. 06/202,284
Methods of and apparatus for trimming film resistors
Inventors:
Patrizia R. Desmarais, Anthony J. DiTroia
Patented Case
View Patent ↗
Granted: Apr 26, 1983
Filed: Oct 30, 1980
Inventors
Patrizia R. Desmarais
Anthony J. DiTroia
Assignee (at issue)
Western Electric Company, 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.