of three-cylinder type

Patents Grantslast 30 patents

  • Information Patent Grant

    3490367

    • Patent number 3,490,367
    • Issue date Jan 20, 1970
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
  • Information Patent Grant

    3431843

    • Patent number 3,431,843
    • Issue date Mar 11, 1969
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS