TREA

with a slewing frame

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Industry

  • CPC
  • E21C27/06
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Parent Industries

EFIXED CONSTRUCTIONS E21Mining E21CMINING OR QUARRYING E21C27/00Machines which completely free the mineral from the seam

Current Industry

E21C27/06with a slewing frame
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Mining machine with adjustable jib
    • Patent number 4,668,016
    • Issue date May 26, 1987
    • The Dosco Corporation
    • Dennis Hart
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2873100
    • Patent number 2,873,100
    • Issue date Feb 10, 1959
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    2327928
    • Patent number 2,327,928
    • Issue date Aug 24, 1943
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1712511
    • Patent number 1,712,511
    • Issue date May 14, 1929
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1660083
    • Patent number 1,660,083
    • Issue date Feb 21, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1659889
    • Patent number 1,659,889
    • Issue date Feb 21, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1656524
    • Patent number 1,656,524
    • Issue date Jan 17, 1928
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1642885
    • Patent number 1,642,885
    • Issue date Sep 20, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1638447
    • Patent number 1,638,447
    • Issue date Aug 9, 1927
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1578544
    • Patent number 1,578,544
    • Issue date Mar 30, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1575431
    • Patent number 1,575,431
    • Issue date Mar 2, 1926
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1559742
    • Patent number 1,559,742
    • Issue date Nov 3, 1925
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1550087
    • Patent number 1,550,087
    • Issue date Aug 18, 1925
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1550088
    • Patent number 1,550,088
    • Issue date Aug 18, 1925
    • B28 - WORKING CEMENT, CLAY, OR STONE
  • Information Patent Grant

    1526558
    • Patent number 1,526,558
    • Issue date Feb 17, 1925
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1510490
    • Patent number 1,510,490
    • Issue date Oct 7, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1490398
    • Patent number 1,490,398
    • Issue date Apr 15, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1489583
    • Patent number 1,489,583
    • Issue date Apr 8, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1482199
    • Patent number 1,482,199
    • Issue date Jan 29, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1480003
    • Patent number 1,480,003
    • Issue date Jan 8, 1924
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1478280
    • Patent number 1,478,280
    • Issue date Dec 18, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1474000
    • Patent number 1,474,000
    • Issue date Nov 13, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1456991
    • Patent number 1,456,991
    • Issue date May 29, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1445230
    • Patent number 1,445,230
    • Issue date Feb 13, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1440789
    • Patent number 1,440,789
    • Issue date Jan 2, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1440791
    • Patent number 1,440,791
    • Issue date Jan 2, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1440790
    • Patent number 1,440,790
    • Issue date Jan 2, 1923
    • B27 - WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL NAILING OR STAPLING MACH...
  • Information Patent Grant

    1440788
    • Patent number 1,440,788
    • Issue date Jan 2, 1923
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1430669
    • Patent number 1,430,669
    • Issue date Oct 3, 1922
    • E21 - EARTH DRILLING MINING
  • Information Patent Grant

    1427118
    • Patent number 1,427,118
    • Issue date Aug 29, 1922
    • E21 - EARTH DRILLING MINING