3690590

Information

• Patent Grant
• 3690590

• References
• Source

• Patent Number

  3,690,590

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1972
  52 years ago

• CPC

  • G11B23/093 - the reels or cores being coaxial

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER