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Johan J. Hotma

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  • Valko, FI
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Patents Grantslast 30 patents

  • Information Patent Grant

    Board press
    • Patent number 4,799,425
    • Issue date Jan 24, 1989
    • Rauma-Repola Oy
    • Johan J. K. Hotma
    • B30 - PRESSES
  • Information Patent Grant

    Method for retarding the dulling of wood-machining blades
    • Patent number 4,588,007
    • Issue date May 13, 1986
    • Rauma-Repola Oy
    • Pentti Raura
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...