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2421831
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Information
Patent Grant
2421831
References
Source
Patent Number
2,421,831
Date Filed
Not available
Date Issued
Tuesday, June 10, 1947
77 years ago
CPC
B29C44/3488 - Vulcanizing the material before foaming
B29C44/3446 - Feeding the blowing agent
B29K2105/04 - cellular or porous
US Classifications
521 - Synthetic resins or natural rubbers
264 - Plastic and nonmetallic article shaping or treating: processes
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