3220011

Information

• Patent Grant
• 3220011

• References
• Source

• Patent Number

  3,220,011

• Date Filed

  Not available

• Date Issued

  Tuesday, November 23, 1965
  59 years ago

• CPC

  • G07C3/12 - in graphical form
  • B66B19/06 - Applications of signalling devices
  • E21C35/00 - Miscellaneous items relating to machines for slitting or completely freeing the mineral from the seam
  • E21C35/08 - Guiding the machine
  • Y10T24/1402 - Packet holders

• US Classifications

  • 346 - Recorders
  • 024 - Buckles, buttons, clasps, etc.