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1791234
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Patent Grant
1791234
References
Source
Patent Number
1,791,234
Date Filed
Not available
Date Issued
Tuesday, February 3, 1931
94 years ago
CPC
C04B41/0081 - characterised by the subsequent cooling step
B28B1/29 - by profiling or strickling the material in open moulds or on moulding surfaces
US Classifications
264 - Plastic and nonmetallic article shaping or treating: processes
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