Granted Patent
Utility
US 5,761,294 · App. 08/683,441
Method and system for connecting a digital phone limited to analog transmissions
Inventors:
Shmuel Shaffer, William J. Beyda
Patented Case
View Patent ↗
Granted: Jun 2, 1998
Filed: Jul 18, 1996
Inventors
Shmuel Shaffer
William J. Beyda
Assignee (at issue)
Siemens Business Communication Systems, 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.