London, South Kensington
20 July 2004
Duoscope Ltd., London; 17½mm., mahogany case, with side film counter, sports viewfinder, hand-crank, internal rotating lamp and deeply inset Meyer 35mm. lens, the side panel with plate DUOSCOPE. SOLE MANUFACTURERS DUOSCOPE LTD., FLORAL STREET, LONDON W.C. PATENTS APPLIED FOR THROUGHOUT THE WORLD
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Brian Coe (1981), The History of Movie Photography, p. 164.
Auer & Ory (1979), Histoire de la caméra ciné amateur, p. 74, nos. 50, 51.
Introduced in 1912 the Duoscope camera contained an electric lamp for connecting to a battery so that it could be used as a projector. Auer notes an identical camera produced by Maltheser Machinebau GmbH of Berlin. The Duoscope company was formally registered in 1913.
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