1461519

Information

• Patent Grant
• 1461519

• References
• Source

• Patent Number

  1,461,519

• Date Filed

  Not available

• Date Issued

  Tuesday, July 10, 1923
  101 years ago

• CPC

  • G01R13/12 - Chemical recording

• US Classifications

  • 346 - Recorders
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems