Photography and optical equipment – Optical article not elsewhere specified – Lens or objective
Patent
1993-09-24
1995-04-25
Word, A. Hugo
Photography and optical equipment
Optical article not elsewhere specified
Lens or objective
D16130, D20 10
Patent
active
D03576949
REFERENCES:
patent: 1001991 (1911-08-01), Sale
patent: 1702317 (1929-02-01), Rose
patent: 2533747 (1950-03-01), Thienemann
patent: 3628871 (1971-12-01), Himmelstrup
patent: 4763986 (1988-08-01), Sego
patent: 5311365 (1994-05-01), Klearman et al.
Oliver Catherine R.
Word A. Hugo
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