2290732

Information

• Patent Grant
• 2290732

• References
• Source

• Patent Number

  2,290,732

• Date Filed

  Not available

• Date Issued

  Tuesday, July 21, 1942
  82 years ago

• CPC

  • G11B23/16 - Record carriers with single-track for recording at spaced intervals along the track thereof
  • Y10T307/74 - Switching systems

• US Classifications

  • 307 - Electrical transmission or interconnection systems