Classifications: Documentary

Classifications: Documentary
745 to 768 of 1,338
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Image Not Available
Documentary
Roy S. Hopkins
Patent- Photographic Printing Machines
April 7, 1931
Image Not Available
Documentary
Roy S. Hopkins
Patent- Photographic Printers
June 10, 1930
Image Not Available
Documentary
Roy S. Hopkins
Patent- Photographic Printer Vignetting Apparatus
January 7, 1930
Image Not Available
Documentary
Roy S. Hopkins
Patent- Numbering Stamps For Photographic Printing Machines
June 11, 1929
Image Not Available
Documentary
Marcus C. Hopkins
Patent- Method Of Color Photography And Photographic Elements
July 3, 1923
Image Not Available
Documentary
George J. Hood
Patent- Method & Apparatus For Recording Designations On Photo Element
December 2, 1919
Image Not Available
Documentary
Hugo F. Hoefle
Patent- Trimming boards
July 2, 1918
Image Not Available
Documentary
Hugo F. Hoefle
Patent- Photographic Print Squares
May 23, 1916
Image Not Available
Documentary
Millard B. Hodgson
Patent- Dental x-ray package
October 9, 1928
Image Not Available
Documentary
Millard B. Hodgson
Patent- Dental x-ray film packages
May 5, 1925
Image Not Available
Documentary
Millard B. Hodgson
Patent- Dental film mount
September 4, 1923
Image Not Available
Documentary
Millard B. Hodgson
Patent- Cassettes for x-ray films
February 8, 1921
Image Not Available
Documentary
Kenneth C.O. Hickman
Patent- Process and Apparatus For Regulating Chemical Reactions
December 10, 1929
Image Not Available
Documentary
Kenneth C.O. Hickman
Patent- Film Inspection Means
June 11, 1929
Image Not Available
Documentary
Kenneth C.O. Hickman
Patent- Roll Film Cartridges
August 9, 1927
Image Not Available
Documentary
Arthur F. Hewitt
Patent- Photographic printing apparatus
October 21, 1902
Image Not Available
Documentary
Edward Hallsted Hewitson
Patent- Process Of Coating Aluminum Surfaces
May 10, 1927
Image Not Available
Documentary
Jens F. Hein
Patent- Camera back piece
May 6, 1890
Image Not Available
Documentary
Anton J. Haug
Patent- Method of and apparatus for making a web in paper making
April 9, 1929
Image Not Available
Documentary
Henry E. Hastings
Patent- Method of Making Color Photographic Film Embossing Tools
July 7, 1931
Image Not Available
Documentary
H. E. Hastings
Patent- Sealed Metallic Receptacle
August 9, 1921
Image Not Available
Documentary
James H. Haste
Patent- Motion Picture Film Strips
October 9, 1928
Image Not Available
Documentary
James H. Haste
Patent- Process of Dehydrating Nitrocellulose Film & Reduce Fire Risk
September 8, 1925
Image Not Available
Documentary
James H. Haste
Patent- Processes For Preparing Photographic Films
April 7, 1925
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