using chemical means

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for color and black and white reproduction and formulation u...

    • Patent number 4,879,267
    • Issue date Nov 7, 1989
    • Fluorographic Services, Inc.
    • Charles P. Collier
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    Transparent image marking sheet for projection systems

    • Patent number 4,296,150
    • Issue date Oct 20, 1981
    • Pelikan A.G.
    • Norbert Mecke
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Copy sheet

    • Patent number 4,272,106
    • Issue date Jun 9, 1981
    • Minnesota Mining and Manufacturing Company
    • Bertrand Y. Auger
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    Arrangement for applying written or drawn information onto image ca...

    • Patent number 4,246,033
    • Issue date Jan 20, 1981
    • Pelikan A.G.
    • Rene von Wartburg
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    2770534

    • Patent number 2,770,534
    • Issue date Nov 13, 1956
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2687949

    • Patent number 2,687,949
    • Issue date Aug 31, 1954
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2601161

    • Patent number 2,601,161
    • Issue date Jun 17, 1952
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2425068

    • Patent number 2,425,068
    • Issue date Aug 5, 1947
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2392414

    • Patent number 2,392,414
    • Issue date Jan 8, 1946
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2379915

    • Patent number 2,379,915
    • Issue date Jul 10, 1945
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2355884

    • Patent number 2,355,884
    • Issue date Aug 15, 1944
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2301900

    • Patent number 2,301,900
    • Issue date Nov 10, 1942
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2285122

    • Patent number 2,285,122
    • Issue date Jun 2, 1942
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2224654

    • Patent number 2,224,654
    • Issue date Dec 10, 1940
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2224269

    • Patent number 2,224,269
    • Issue date Dec 10, 1940
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2224271

    • Patent number 2,224,271
    • Issue date Dec 10, 1940
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2197015

    • Patent number 2,197,015
    • Issue date Apr 16, 1940
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2040170

    • Patent number 2,040,170
    • Issue date May 12, 1936
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    2038516

    • Patent number 2,038,516
    • Issue date Apr 21, 1936
    • G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
  • Information Patent Grant

    1343978

    • Patent number 1,343,978
    • Issue date Jun 22, 1920
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS