3434149

Information

• Patent Grant
• 3434149

• References
• Source

• Patent Number

  3,434,149

• Date Filed

  Not available

• Date Issued

  Tuesday, March 18, 1969
  56 years ago

• CPC

  • G01D15/32 - for circular charts

• US Classifications

  • 346 - Recorders
  • 360 - Dynamic magnetic information storage or retrieval