specially adapted for printing musical scores

Patents Grantslast 30 patents

  • Information Patent Grant

    Descender printing system for dot matrix printer

    • Patent number 4,037,705
    • Issue date Jul 26, 1977
    • Extel Corporation
    • Donald P. Martin
    • G06 - COMPUTING CALCULATING COUNTING
  • Information Patent Grant

    2305231

    • Patent number 2,305,231
    • Issue date Dec 15, 1942
    • B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS