Granted Patent
Utility
US 4,457,466 · App. 06/383,906
Mask for protecting tab contacts of circuit boards
Inventors:
Joseph Ahmann, James J. Grammas
Patented Case
View Patent ↗
Granted: Jul 3, 1984
Filed: Jun 1, 1982
Inventors
Joseph Ahmann
James J. Grammas
Assignee (at issue)
GTE Automatic Electric 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.