by both slitting and planing

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Patents Grantslast 30 patents

Information Patent Grant
Mineral mining installation with planer and jet carrier
- Patent number 4,243,268
- Issue date Jan 6, 1981
- Gewerkschaft Eisenhutte Westfalia
- Armin Lobbe
- E21 - EARTH DRILLING MINING
Information Patent Grant
3726563
- Patent number 3,726,563
- Issue date Apr 10, 1973
- E21 - EARTH DRILLING MINING
Information Patent Grant
3724901
- Patent number 3,724,901
- Issue date Apr 3, 1973
- E21 - EARTH DRILLING MINING
Information Patent Grant
3409329
- Patent number 3,409,329
- Issue date Nov 5, 1968
- E21 - EARTH DRILLING MINING
Information Patent Grant
3365234
- Patent number 3,365,234
- Issue date Jan 23, 1968
- E21 - EARTH DRILLING MINING
Information Patent Grant
3339981
- Patent number 3,339,981
- Issue date Sep 5, 1967
- E21 - EARTH DRILLING MINING
Information Patent Grant
3337269
- Patent number 3,337,269
- Issue date Aug 22, 1967
- E21 - EARTH DRILLING MINING
Information Patent Grant
2935310
- Patent number 2,935,310
- Issue date May 3, 1960
- E21 - EARTH DRILLING MINING
Information Patent Grant
2767969
- Patent number 2,767,969
- Issue date Oct 23, 1956
- E21 - EARTH DRILLING MINING
Information Patent Grant
1755332
- Patent number 1,755,332
- Issue date Apr 22, 1930
- E21 - EARTH DRILLING MINING
Information Patent Grant
1755700
- Patent number 1,755,700
- Issue date Apr 22, 1930
- E21 - EARTH DRILLING MINING