3084920

Information

• Patent Grant
• 3084920

• References
• Source

• Patent Number

  3,084,920

• Date Filed

  Not available

• Date Issued

  Tuesday, April 9, 1963
  61 years ago

• CPC

  • E21D23/0052 - with advancing shifting devices connected therewith
  • E21C35/14 - Equipment for pressing the conveyor towards the working face

• US Classifications

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