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John P. Edgar
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Alameda, CA, US
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last 30 patents
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Patent Grant
Incandescent mantles
Patent number
5,124,286
Issue date
Jun 23, 1992
John P. Edgar
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Patent Grant
Incandescent mantles
Patent number
5,071,799
Issue date
Dec 10, 1991
John P. Edgar
C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES