2144209

Information

• Patent Grant
• 2144209

• References
• Source

• Patent Number

  2,144,209

• Date Filed

  Not available

• Date Issued

  Tuesday, January 17, 1939
  86 years ago

• CPC

  • G03B1/46 - Rollers engaging face of film
  • G03B21/32 - Details specially adapted for motion-picture projection

• US Classifications

  • 352 - Optics: motion pictures