3909844

Information

• Patent Grant
• 3909844

• References
• Source

• Patent Number

  3,909,844

• Date Filed

  Not available

• Date Issued

  Tuesday, September 30, 1975
  49 years ago

• CPC

  • C07D243/16 - substituted in position 5 by aryl radicals
  • G11B15/24 - Drive disengaging means
  • G11B15/68 - Automatic cassette changing arrangements; automatic tape changing arrangements
  • G11B25/06 - using web-form record carriers

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval