Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Element or attachment
Design Patent
1998-12-08
2001-12-18
Asch, Jeffrey (Department: 2913)
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Element or attachment
Design Patent
active
D0452234
CLAIM:
The ornamental design for a push-button matrix, as shown and described.
REFERENCES:
patent: D. 237802 (1975-11-01), Klaiber et al.
patent: D. 364170 (1995-11-01), Tobish
patent: D. 403683 (1999-01-01), Russell
patent: 4386245 (1983-05-01), Nimura et al.
Tele, Swedish publication, pp. 34 and 38, Jan. 1982.
Arena Christopher M.
Russell Rachel K.
Asch Jeffrey
BellSouth Intellectual Property Corporation
Holmes Brenda O.
Kilpatrick & Stockton LLP
Knowlton Paul E.
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