Joseph C. Zelanko

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Cranberry Township, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Filler-containing rock bolt anchoring system and method of preparat...
- Patent number 5,993,116
- Issue date Nov 30, 1999
- Sandvik Rock Tools, Inc.
- Ronald L. Paxton
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Mine stopping
- Patent number 5,934,990
- Issue date Aug 10, 1999
- The Tensar Corporation
- John E. Steffenino
- E21 - EARTH DRILLING MINING