3921147

Information

• Patent Grant
• 3921147

• References
• Source

• Patent Number

  3,921,147

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1975
  49 years ago

• CPC

  • A61B5/04325 - using integrated circuit memory devices
  • A61B5/04365 - Playback at speeds other than the recording speed

• US Classifications

  • 600 - Surgery