1412509

Information

• Patent Grant
• 1412509

• References
• Source

• Patent Number

  1,412,509

• Date Filed

  Not available

• Date Issued

  Tuesday, April 11, 1922
  103 years ago

• CPC

  • G03B21/20 - Lamp houses
  • G03B1/34 - Beaters
  • G03B21/30 - adapted to collapse or fold
  • G03B21/32 - Details specially adapted for motion-picture projection

• US Classifications

  • 226 - Advancing material of indeterminate length