Granted Patent
Utility
US 5,917,893 · App. 08/485,113
Multiple format telephonic interface control system
Inventor:
Ronald A. Katz
Patented Case
View Patent ↗
Granted: Jun 29, 1999
Filed: Jun 7, 1995
Inventor
Ronald A. Katz
Assignee (at issue)
Ronald A. Katz Technology Licensing, L.P.
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.