Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1984-06-20
1987-06-16
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D02903601
REFERENCES:
patent: D270729 (1983-09-01), Lahey et al.
patent: D278063 (1985-03-01), Chamberlain et al.
Datamation, 3-1983, p. 177, IBM Decision Data Keyboard.
Datamation, 4-1983, p. 39, IBM Personal Computer Keyboard.
Datamation, 6-1983, p. 117, Phaze Keyboard.
Anzelone Thomas A.
Cotton Raymond F.
Davis Myron F.
del Sol Pedro D.
Ewart, Jr. Robert M.
International Business Machines - Corporation
Lucas Susan J.
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