Granted Patent
Utility
US 4,413,252 · App. 06/132,390
Capacitive switch and panel
Inventors:
Hugh J. Tyler, William H. Conway
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Mar 21, 1980
Inventors
Hugh J. Tyler
William H. Conway
Assignee (at issue)
ROBERTSHAW CONTROLS PRIVATE LIMITED
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.