Granted Patent
Utility
US 4,894,634 · App. 07/259,833
Switch device
Inventors:
Masakazu Nezuka, Yuji Saito, Yasuhiro Sato
Patented Case
View Patent ↗
Granted: Jan 16, 1990
Filed: Oct 19, 1988
Inventors
Masakazu Nezuka
Yuji Saito
Yasuhiro Sato
Assignee (at issue)
Texas Instruments 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.