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Donald Mangrum
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Sanger, CA, US
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last 30 patents
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Patent Grant
Keywell form retention assembly
Patent number
11,479,983
Issue date
Oct 25, 2022
Donald Mangrum
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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last 30 patents
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Patent Application
KEYWELL FORM RETENTION ASSEMBLY
Publication number
20220081918
Publication date
Mar 17, 2022
Donald Mangrum
E04 - BUILDING