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2581483
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Patent Grant
2581483
References
Source
Patent Number
2,581,483
Date Filed
Not available
Date Issued
Tuesday, January 8, 1952
72 years ago
CPC
A47C7/35 - Combinations of different types of springs Adjustable springs Attachment of springs to other springs or to the base frame; Springs for seat parts not provided for in other groups of this subclass
A47C23/063 - by elastic means
B60N2/7058 - Metallic springs
US Classifications
005 - Beds
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