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2140552
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Information
Patent Grant
2140552
References
Source
Patent Number
2,140,552
Date Filed
Not available
Date Issued
Tuesday, December 20, 1938
85 years ago
CPC
B29C44/3488 - Vulcanizing the material before foaming
B29C44/3453 - Feeding the blowing agent to solid plastic material
B29K2007/00 - Use of natural rubber as moulding material
B29K2105/04 - cellular or porous
US Classifications
441 - Buoys, rafts, and aquatic devices
264 - Plastic and nonmetallic article shaping or treating: processes
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