Granted Patent
Utility
US 4,344,041 · App. 06/239,084
Biphase detector
Inventor:
Reuben E. Maine
Patented Case
View Patent ↗
Granted: Aug 10, 1982
Filed: Feb 27, 1981
Inventor
Reuben E. Maine
Assignee (at issue)
Sperry Corp.
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.