Granted Patent
Utility
US 4,987,586 · App. 07/080,404
Modem-telephone interconnect
Inventors:
Allen E. Gross, Marvin F. Malm
Patented Case
View Patent ↗
Granted: Jan 22, 1991
Filed: Jul 31, 1987
Inventors
Allen E. Gross
Marvin F. Malm
Assignee (at issue)
Compaq Computer 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.