William L. Zopfi

Follow

Person

Ferndale, MI, US

People

Patents Grantslast 30 patents

Information Patent Grant
Joint construction with sealing gasket for joints with plastic or o...
- Patent number 3,998,478
- Issue date Dec 21, 1976
- William L. Zopfi
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...