Raymond L. Downs

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Ann Arbor, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Method of manufacturing hollow members having uniform wall thicknes...
- Patent number 4,343,675
- Issue date Aug 10, 1982
- The United States of America as represented by the United States Department o...
- Paul R. Anderson
- C03 - GLASS MINERAL OR SLAG WOOL
Information Patent Grant
Hollow microspheres of silica glass and method of manufacture
- Patent number 4,336,338
- Issue date Jun 22, 1982
- The United States of America as represented by the United States Department o...
- Raymond L. Downs
- C03 - GLASS MINERAL OR SLAG WOOL