-
-
Longwall optimization control
-
Patent number 10,208,592
-
Issue date Feb 19, 2019
-
Joy Global Underground Mining LLC
-
Gareth Rimmington
-
E21 - EARTH DRILLING MINING
-
-
Material guide assembly
-
Patent number 8,899,693
-
Issue date Dec 2, 2014
-
Joy MM Delaware, Inc.
-
Michael L. O'Neill
-
E21 - EARTH DRILLING MINING
-
-
3856357
-
Patent number 3,856,357
-
Issue date Dec 24, 1974
-
E21 - EARTH DRILLING MINING
-
3459453
-
Patent number 3,459,453
-
Issue date Aug 5, 1969
-
E21 - EARTH DRILLING MINING
-
3360299
-
Patent number 3,360,299
-
Issue date Dec 26, 1967
-
E21 - EARTH DRILLING MINING
-
3350137
-
Patent number 3,350,137
-
Issue date Oct 31, 1967
-
E21 - EARTH DRILLING MINING
-
3339982
-
Patent number 3,339,982
-
Issue date Sep 5, 1967
-
E21 - EARTH DRILLING MINING
-
3294450
-
Patent number 3,294,450
-
Issue date Dec 27, 1966
-
E21 - EARTH DRILLING MINING
-
3285664
-
Patent number 3,285,664
-
Issue date Nov 15, 1966
-
E21 - EARTH DRILLING MINING
-
3206252
-
Patent number 3,206,252
-
Issue date Sep 14, 1965
-
E21 - EARTH DRILLING MINING
-
3052455
-
Patent number 3,052,455
-
Issue date Sep 4, 1962
-
E21 - EARTH DRILLING MINING
-
3006624
-
Patent number 3,006,624
-
Issue date Oct 31, 1961
-
E21 - EARTH DRILLING MINING
-
2792205
-
Patent number 2,792,205
-
Issue date May 14, 1957
-
E21 - EARTH DRILLING MINING
-
2742272
-
Patent number 2,742,272
-
Issue date Apr 17, 1956
-
E21 - EARTH DRILLING MINING
-
2495840
-
Patent number 2,495,840
-
Issue date Jan 31, 1950
-
E21 - EARTH DRILLING MINING
-
1687949
-
Patent number 1,687,949
-
Issue date Oct 16, 1928
-
E21 - EARTH DRILLING MINING
-
1680386
-
Patent number 1,680,386
-
Issue date Aug 14, 1928
-
E21 - EARTH DRILLING MINING
-
1639741
-
Patent number 1,639,741
-
Issue date Aug 23, 1927
-
E21 - EARTH DRILLING MINING
-
1604701
-
Patent number 1,604,701
-
Issue date Oct 26, 1926
-
E21 - EARTH DRILLING MINING
-
1603621
-
Patent number 1,603,621
-
Issue date Oct 19, 1926
-
E21 - EARTH DRILLING MINING
-
1493701
-
Patent number 1,493,701
-
Issue date May 13, 1924
-
E21 - EARTH DRILLING MINING
-
1321427
-
Patent number 1,321,427
-
Issue date Nov 11, 1919
-
E21 - EARTH DRILLING MINING
-
1290591
-
Patent number 1,290,591
-
Issue date Jan 7, 1919
-
E21 - EARTH DRILLING MINING
-
1276248
-
Patent number 1,276,248
-
Issue date Aug 20, 1918
-
E21 - EARTH DRILLING MINING
-
1271199
-
Patent number 1,271,199
-
Issue date Jul 2, 1918
-
E21 - EARTH DRILLING MINING
-
1232696
-
Patent number 1,232,696
-
Issue date Jul 10, 1917
-
E21 - EARTH DRILLING MINING
-
1226412
-
Patent number 1,226,412
-
Issue date May 15, 1917
-
E21 - EARTH DRILLING MINING