1460508

Information

• Patent Grant
• 1460508

• References
• Source

• Patent Number

  1,460,508

• Date Filed

  Not available

• Date Issued

  Tuesday, July 3, 1923
  101 years ago

• CPC

  • E21C37/08 - Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole

• US Classifications

  • 299 - Mining or in situ disintegration of hard material
  • 086 - Ammunition and explosive-charge making
  • 092 - Expansible chamber devices