Granted Patent
Utility
US 4,950,874 · App. 07/410,912
Expansion joint for keyboard dome sheets
Inventors:
Stephen S. Damitio, George P. English
Patented Case
View Patent ↗
Granted: Aug 21, 1990
Filed: Sep 22, 1989
Inventors
Stephen S. Damitio
George P. English
Assignee (at issue)
Key Tronic Corporation
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.