Classifications: Documentary

Classifications: Documentary
481 to 504 of 1,338
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Image Not Available
Documentary
Milton B. Punnett
Patent- Photographic Film and Process of Making The Same
June 9, 1925
Image Not Available
Documentary
Milton B. Punnett
Patent- Process of Producing Decolorized Carbon
July 5, 1921
Image Not Available
Documentary
William Henry Prestwich
Patent- Sensitzed Photographic Paper
September 4, 1894
Image Not Available
Documentary
Chauncy U. Prachel
Patent- Process For Reducing The Viscosity of Cellulose Ethers
August 7, 1928
Image Not Available
Documentary
Chauncy U. Prachel
Patent- Process For Reducing The Viscosity of Nitrocellulose Materials
March 6, 1928
Image Not Available
Documentary
Frank W. Potter
Patent- Photoprint Drier
July 4, 1916
Image Not Available
Documentary
Levi N. Plante
Patent- Scoring device
September 21, 1915
Image Not Available
Documentary
Reinhart W. Pittman
Patent- Motion Picture Film Feeding Device
August 30, 1921
Image Not Available
Documentary
Friedrich A.G. Pirwitz
Patent- Photographic Shutter
June 24, 1919
Image Not Available
Documentary
Arthur M. Pierce
Patent- Photographic Plate Holder
October 18, 1892
Image Not Available
Documentary
George F. Phillips
Patent- Motion Picture Apparatus
September 10, 1929
Image Not Available
Documentary
August Petryl
Patent- Photographic Easel (Design)
February 3, 1931
Image Not Available
Documentary
Clarence Le Roy Parks
Patent- Photoprinting Box
August 13, 1921
Image Not Available
Documentary
William J. Parkinson
Patent- Press Guard
October 18, 1921
Image Not Available
Documentary
William J. Parkinson
Patent- Controlling device for punch presses
June 15, 1920
Image Not Available
Documentary
W. J. Parkinson
Patent- Film Winding Device
July 8, 1919
Image Not Available
Documentary
Virgil M. Palmer
Patent- Package of Wrapped Photographic Material
December 8, 1925
Image Not Available
Documentary
Virgil M. Palmer
Patent- Receptacle and Closure Therefor
January 2, 1923
Image Not Available
Documentary
Walter T. Oxley
Patent- Photographic Printing Machine
March 2, 1920
Image Not Available
Documentary
Clarence H. Owen
Patent- Photographic Printing Machine
January 2, 1923
Image Not Available
Documentary
Thomas M.K. Overland
Patent- Photographic Film Roll
October 19, 1909
Image Not Available
Documentary
Percy R. Ord
Patent- Method of Making Lenticular Film Embossing Rollers
May 6, 1930
Image Not Available
Documentary
George H. Ohlau
Patent- Aviation camera shutter operating mechanism
January 8, 1929
Image Not Available
Documentary
George H. Ohlau
Patent- Aviation cameras
October 18, 1927
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