1521238

Information

• Patent Grant
• 1521238

• References
• Source

• Patent Number

  1,521,238

• Date Filed

  Not available

• Date Issued

  Tuesday, December 30, 1924
  100 years ago

• CPC

  • B29D30/68 - Cutting profiles into the treads of tyres
  • B29D2030/685 - before tread vulcanization
  • Y10T82/14 - Axial pattern
  • Y10T82/2522 - Portable
  • Y10T409/30952 - with cutter holder

• US Classifications

  • 157 - Wheelwright machines
  • 082 - Turning
  • 409 - Gear cutting, milling, or planing