Mining Machinery Development Corp.

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Bluefield, WV, US

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Patents Grantslast 30 patents

Information Patent Grant
Belt conveyor tandem drive assembly with ground level clean-out cle...
- Patent number 4,312,445
- Issue date Jan 26, 1982
- Mining Machinery Development Corp.
- Robert C. Nelson
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Mobile mine roof support system
- Patent number 4,307,982
- Issue date Dec 29, 1981
- Mining Machinery Development Corp.
- Robert C. Nelson
- E21 - EARTH DRILLING MINING

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