1929815

Information

• Patent Grant
• 1929815

• References
• Source

• Patent Number

  1,929,815

• Date Filed

  Not available

• Date Issued

  Tuesday, October 10, 1933
  91 years ago

• CPC

  • G03B21/32 - Details specially adapted for motion-picture projection
  • G03B21/36 - Fades, dissolves, or wipes

• US Classifications

  • 352 - Optics: motion pictures