Earl Schumacher

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New Berlin, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Seating seal means for disc-type valve
- Patent number 4,923,173
- Issue date May 8, 1990
- Vilter Manufacturing Corporation
- Paul G. Szymaszek
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...