Erwin Anton Letzgus, Jr.

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Somerset, NJ, US

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Patents Grantslast 30 patents

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Apparatus for the gunning of a refractory material and nozzles for...
- Patent number 6,915,966
- Issue date Jul 12, 2005
- Specialty Minerals (Michigan) Inc.
- Bernard D. Gist
- F27 - FURNACES KILNS OVENS RETORTS