Combined optical viewer and transparency housing

Details Combined optical viewer and transparency housing Combined optical viewer and transparency housing

1991-02-12

1993-07-13

Word, A. Hugo

Photography and optical equipment

Optical article not elsewhere specified

D 3 63, D11 79, D16135

Patent

active

D03373398

REFERENCES:
patent: D156228 (1949-11-01), Gaudriot
patent: D257572 (1980-12-01), Wefler
patent: D262497 (1982-01-01), Chan
patent: D264856 (1982-06-01), Nottingham et al.
patent: D278520 (1985-04-01), Hamtak
patent: D278609 (1985-04-01), Satterelli
patent: 874049 (1907-12-01), Borsch
patent: 3567085 (1971-03-01), Flores
patent: 4241977 (1980-12-01), Wood
patent: 4333562 (1982-06-01), Todd

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