3164066

Information

• Patent Grant
• 3164066

• References
• Source

• Patent Number

  3,164,066

• Date Filed

  Not available

• Date Issued

  Tuesday, January 5, 1965
  60 years ago

• CPC

  • E21D23/0086 - in galleries
  • E21D23/0069 - without essential advancing shifting devices
  • E21D23/04 - Structural features of the supporting construction
  • E21D23/12 - Control

• US Classifications

  • 091 - Motors: expansible chamber type