1502381

Information

• Patent Grant
• 1502381

• References
• Source

• Patent Number

  1,502,381

• Date Filed

  Not available

• Date Issued

  Tuesday, July 22, 1924
  100 years ago

• CPC

  • B44B3/02 - wherein plane surfaces are worked
  • B44B2700/023 - for engraving parallel lines of flat surfaces
  • Y10T82/2516 - Magazine type
  • Y10T409/500164 - with regulation of operation by templet, card, or other replaceable information supply

• US Classifications

  • 409 - Gear cutting, milling, or planing
  • 082 - Turning