2066041

Information

• Patent Grant
• 2066041

• References
• Source

• Patent Number

  2,066,041

• Date Filed

  Not available

• Date Issued

  Tuesday, December 29, 1936
  88 years ago

• CPC

  • G04C21/12 - by electro-acoustic means

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • 352 - Optics: motion pictures
  • 368 - Horology: time measuring systems or devices
  • 968 - Horology