2177764

Information

• Patent Grant
• 2177764

• References
• Source

• Patent Number

  2,177,764

• Date Filed

  Not available

• Date Issued

  Tuesday, October 31, 1939
  85 years ago

• CPC

  • G11B3/14 - by using effects of gravity or inertia
  • G11B3/08545 - driven by cams
  • G11B3/0955 - using mechanical means for detecting the end of the recording

• US Classifications

  • 369 - Dynamic information storage or retrieval
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER