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3837769
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Information
Patent Grant
3837769
References
Source
Patent Number
3,837,769
Date Filed
Not available
Date Issued
Tuesday, September 24, 1974
49 years ago
CPC
B29C67/222 - using expandable particles or beads as starting material
B29C44/3434 - by using a sheet, grid, etc. to distribute the steam in the mould
B29C33/04 - using liquids, gas or steam
US Classifications
425 - Plastic article or earthenware shaping or treating: apparatus
165 - Heat exchange
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