Douglas E. Ludwig

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Depew, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Multi-axis rotary seal system
- Patent number 6,464,493
- Issue date Oct 15, 2002
- Harper International Corp.
- Brian A. Polino
- F27 - FURNACES KILNS OVENS RETORTS

Patents Applicationslast 30 patents

Information Patent Application
Multi-axis rotary seal system
- Publication number 20020022209
- Publication date Feb 21, 2002
- Brian A. Polino
- F27 - FURNACES KILNS OVENS RETORTS