Optical filter prism

Details Optical filter prism Optical filter prism

1990-09-26

1994-03-08

Ansher, Bernard

Photography and optical equipment

Optical article not elsewhere specified

Prism

Patent

active

D03449688

REFERENCES:
patent: D232652 (1974-09-01), Hoffer
patent: D313250 (1990-12-01), Pacitti
patent: 1855987 (1932-04-01), Rammer
patent: 1970209 (1934-08-01), Weaton
patent: 2442564 (1948-06-01), Heyer
patent: 3121525 (1964-02-01), Hayes
patent: 3590499 (1971-07-01), Rinehuls
patent: 4170401 (1979-10-01), Yoder, Jr. et al.
patent: 4537001 (1985-08-01), Uppstrom
patent: 4623225 (1986-11-01), Forkner
"Crystallography" by Wadsworth 1909 Plate VII FIG. No. 153, center top middle.

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