Robert B. Lewis

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Newark, DE, US

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Patents Grantslast 30 patents

Information Patent Grant
Material converger
- Patent number 4,229,861
- Issue date Oct 28, 1980
- E. I. Du Pont de Nemours and Company
- Edgar A. Campo
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Web pleater
- Patent number 4,170,347
- Issue date Oct 9, 1979
- E. I. Du Pont de Nemours and Company
- Robert B. Lewis
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Material converger
- Patent number 4,144,618
- Issue date Mar 20, 1979
- E. I. Du Pont de Nemours and Company
- Edgar A. Campo
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL