David C. Card

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Denver, CO, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for making cellulose insulation
- Patent number 4,191,224
- Issue date Mar 4, 1980
- Diamond Insulation Industries, Inc.
- Kenneth L. Bontrager
- C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
Information Patent Grant
Cellulose insulation storage bin with improved debridger
- Patent number 4,171,165
- Issue date Oct 16, 1979
- Diamond Insulation Industries, Inc.
- David C. Card
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL