3558142

Information

• Patent Grant
• 3558142

• References
• Source

• Patent Number

  3,558,142

• Date Filed

  Not available

• Date Issued

  Tuesday, January 26, 1971
  53 years ago

• CPC

  • G11B23/0875 - Indicating means
  • G09B5/062 - Combinations of audio and printed presentations
  • G11B23/04 - Magazines Cassettes for webs or filaments
  • Y10S40/906 - Sound

• US Classifications

  • 242 - Winding, tensioning, or guiding
  • 040 - Card, picture, or sign exhibiting
  • 116 - Signals and indicators
  • 360 - Dynamic magnetic information storage or retrieval
  • 434 - Education and demonstration
  • G9B - INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER