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Richard C. Assmus
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Braintree, MA, US
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last 30 patents
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Patent Grant
Ceramic monolithic structure having an internal cavity contained th...
Patent number
4,833,000
Issue date
May 23, 1989
GTE Laboratories Incorporated
Elizabeth A. Trickett
B28 - WORKING CEMENT, CLAY, OR STONE
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Patent Grant
Ceramic monolithic structure having an internal cavity contained th...
Patent number
4,806,295
Issue date
Feb 21, 1989
GTE Laboratories Incorporated
Elizabeth A. Trickett
B28 - WORKING CEMENT, CLAY, OR STONE