Granted Patent
Utility
US 4,637,012 · App. 06/812,553
Flexible duplex dual port serial link controller
Inventor:
Edwin P. Crabbe, Jr.
Patented Case
View Patent ↗
Granted: Jan 13, 1987
Filed: Dec 23, 1985
Inventor
Edwin P. Crabbe, Jr.
Assignee (at issue)
GTE Communication Systems Corporation
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.