2184973

Information

• Patent Grant
• 2184973

• References
• Source

• Patent Number

  2,184,973

• Date Filed

  Not available

• Date Issued

  Tuesday, December 26, 1939
  86 years ago

• CPC

  • H04N1/0621 - using a picture-bearing surface stationary in the main-scanning direction
  • H04N1/032 - for picture information reproduction
  • H04N1/0607 - Scanning a concave surface
  • Y10T409/303472 - Tracer

• US Classifications

  • 346 - Recorders
  • 347 - Incremental printing of symbolic information
  • 409 - Gear cutting, milling, or planing