Hand-held viewer for navigational charts or the like

Details Hand-held viewer for navigational charts or the like Hand-held viewer for navigational charts or the like

1975-10-06

1978-12-05

Ansher, Bernard

Photography and optical equipment

Projector or viewer

With provision for transparency magazine

D1604

Patent

active

D02504766

REFERENCES:
patent: D239055 (1976-03-01), Holliday
patent: 2169786 (1939-08-01), Baum
patent: 2211559 (1940-08-01), Erickson
patent: 2737741 (1956-03-01), Rice
patent: 2787070 (1957-04-01), Idoine
patent: 3945717 (1976-03-01), Ryder et al.

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