Granted Patent
Utility
US 4,281,253 · App. 05/937,828
Applications of dual function electro-optic transducer in optical signal transmission
Inventor:
William H. Culver
Patented Case
View Patent ↗
Granted: Jul 28, 1981
Filed: Aug 29, 1978
Inventor
William H. Culver
Assignee (at issue)
Optelecom, 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.