Donald R. HOLFELD

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Mount Laurel, NJ, US

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Patents Grantslast 30 patents

Information Patent Grant
Stringline and cross-level gauge
- Patent number 8,222,893
- Issue date Jul 17, 2012
- Harsco Corporation
- Donald R. Holfeld
- B61 - RAILWAYS

Patents Applicationslast 30 patents

Information Patent Application
STRINGLINE AND CROSS-LEVEL GAUGE
- Publication number 20100237857
- Publication date Sep 23, 2010
- HARSCO CORPORATION
- Donald R. HOLFELD
- B61 - RAILWAYS