Wide field illuminator

Details Wide field illuminator Wide field illuminator

1981-10-13

1984-03-06

Holtje, Nelson C.

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1603

Patent

active

D02729148

REFERENCES:
patent: D197688 (1964-03-01), Bastin
patent: 1782864 (1930-11-01), Briechle
patent: 1863573 (1932-06-01), Lutz
patent: 3330193 (1967-07-01), Kaess
patent: 3922085 (1975-11-01), Sheets

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