Granted Patent
Utility
US 4,318,074 · App. 06/196,941
Contactless electromagnetic relay
Inventor:
Robert J. Sabon
Patented Case
View Patent ↗
Granted: Mar 2, 1982
Filed: Oct 14, 1980
Inventor
Robert J. Sabon
Assignee (at issue)
GTE Automatic Electric Labs 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.