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Duraglass Research & Development Corporation
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Boulder, CO, US
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Patents Grants
last 30 patents
Information
Patent Grant
Strengthening of glass
Patent number
4,130,407
Issue date
Dec 19, 1978
Duraglass Research & Development Corp.
Nobel Ida
C03 - GLASS MINERAL OR SLAG WOOL
Information
Patent Grant
Process of strengthening glass bottles and the like
Patent number
4,039,310
Issue date
Aug 2, 1977
Duraglass Research & Development Corporation
Nelson Eugene Sipe
C03 - GLASS MINERAL OR SLAG WOOL