Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1992-09-09
1997-11-18
Tung, M. H.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
1402
Patent
active
D03864774
REFERENCES:
patent: 5140678 (1992-08-01), Torres
Symbol Sourcebook, space expand and line spacing key symbols, p. 65, 1972.
Symbol Sourcebook, kymograph, moveable grid, layer level symbols, p. 116, 1972.
Handbook of Pictorial Symbols, D/FW, ATA, Pg symbols, p. 59, 1976.
Aaker Mark A.
Apple Computer Inc.
Tung M. H.
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