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3830279
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Patent Grant
3830279
References
Source
Patent Number
3,830,279
Date Filed
Not available
Date Issued
Tuesday, August 20, 1974
49 years ago
CPC
B22C9/00 - Moulds or cores Moulding processes
B22C7/005 - Adjustable, sectional, expandable or flexible patterns
B22C9/03 - formed by vacuum-sealed moulding
US Classifications
164 - Metal founding
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