3381586

Information

• Patent Grant
• 3381586

• References
• Source

• Patent Number

  3,381,586

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 1968
  56 years ago

• CPC

  • E21D23/0073 - with advancing shifting devices connected therewith
  • E21D23/006 - provided with essential hydraulic devices
  • E21D23/16 - Hydraulic or pneumatic features
  • E21F13/086 - Armoured conveyors shifting devices

• US Classifications

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