338596

Information

• Patent Grant
• 338596

• References
• Source

• Patent Number

  338,596

• Date Filed

  Not available

• Date Issued

  Tuesday, March 23, 1886
  138 years ago

• CPC

  • G01D9/20 - the recording element
  • G07C5/12 - in graphical form

• US Classifications

  • 346 - Recorders