Granted Patent
Utility
US 6,078,593 · App. 08/795,184
Method and apparatus for reliable operation of universal voice grade cards
Inventors:
Thomas R. Eames, Lac X. Trinh, E. Barton Manchester, Bradley N. Yearwood, David J. Manley, Scott T. Hicks, Jaskarn Singh Johal, Charles A. Eldering
Patented Case
View Patent ↗
Granted: Jun 20, 2000
Filed: Feb 4, 1997
Inventors
Thomas R. Eames
Lac X. Trinh
E. Barton Manchester
Bradley N. Yearwood
David J. Manley
Scott T. Hicks
Jaskarn Singh Johal
Charles A. Eldering
Assignee (at issue)
Next Level Communications, 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.