Granted Patent
Utility
US 5,266,839 · App. 07/747,949
Adapter for asynchronous devices
Inventor:
Michael Mattes
Patented Case
View Patent ↗
Granted: Nov 30, 1993
Filed: Aug 21, 1991
Inventor
Michael Mattes
Assignee (at issue)
Bell & Howell Phillipsburg Company
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.