1837509

Information

• Patent Grant
• 1837509

• References
• Source

• Patent Number

  1,837,509

• Date Filed

  Not available

• Date Issued

  Tuesday, December 22, 1931
  94 years ago

• CPC

  • H04N1/04 - Scanning arrangements
  • Y10T83/166 - Removable element carries program
  • Y10T409/500328 - including use of tracer adapted to trigger electrical or fluid energy

• US Classifications

  • 358 - Facsimile and static presentation processing
  • 083 - Cutting
  • 346 - Recorders
  • 400 - Typewriting machines
  • 409 - Gear cutting, milling, or planing