3672176

Information

• Patent Grant
• 3672176

• References
• Source

• Patent Number

  3,672,176

• Date Filed

  Not available

• Date Issued

  Tuesday, June 27, 1972
  52 years ago

• CPC

  • E21D23/0073 - with advancing shifting devices connected therewith

• US Classifications

  • 405 - Hydraulic and earth engineering
  • 091 - Motors: expansible chamber type