Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1977-03-16
1981-09-15
Lucas, Susan J.
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
D16103, D1606
Patent
active
D02607743
REFERENCES:
patent: 2999136 (1961-09-01), Holt et al.
patent: 3055267 (1962-09-01), Catt
patent: 3119903 (1964-01-01), Rosemond et al.
patent: 3874775 (1975-01-01), Lazarus
NBS Consumer Information Series 4 "Facts About Hearing and Hearing Aids", Nov. 1971, p. 23, Frames Optical Journal & Review of Optometry, Oct. 15, 1957, pp. 29 & 30, Temples.
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