Norbert C. Howell

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Connersville, IN, US

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for bending a laminated panel
- Patent number 4,262,514
- Issue date Apr 21, 1981
- H. H. Robertson Company
- Norbert C. Howell
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Foamed-in-place double-skin building panel
- Patent number 4,037,377
- Issue date Jul 26, 1977
- H. H. Robertson Company
- Norbert C. Howell
- E04 - BUILDING