Photography and optical equipment – Optical article not elsewhere specified – Telescope
Patent
1989-12-04
1992-10-06
Word, A. Hugo
Photography and optical equipment
Optical article not elsewhere specified
Telescope
Patent
active
D03300374
REFERENCES:
patent: 91969 (1869-06-01), Saxton
patent: D305902 (1990-02-01), Wakayama et al.
patent: D310675 (1990-09-01), Lu Huang
patent: D311013 (1990-10-01), Wakayama et al.
patent: 567890 (1896-09-01), Densmore et al.
patent: 1024730 (1912-04-01), Levy
patent: 2002782 (1935-05-01), Lester
patent: 2334483 (1943-11-01), Dennis
patent: 3005378 (1961-10-01), Golden
Akiyama Akio
Wakayama Shouji
Coles Doris V.
Word A. Hugo
Young Optical Co., Ltd.
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