Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Speaker or housing therefor
Patent
1991-01-04
1992-12-22
Feifer, Melvin B.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Speaker or housing therefor
D14223
Patent
active
D03319288
REFERENCES:
patent: 2537201 (1951-01-01), Amfitheatrof
patent: 4615050 (1986-10-01), Lonnstedt
patent: 4771859 (1988-09-01), Breland
Handbook of Designs & Devices, Hornung .COPYRGT.1956, p. 2, item #14-Ring Design.
Feifer Melvin B.
Gilden Leon
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