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2151420
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Information
Patent Grant
2151420
References
Source
Patent Number
2,151,420
Date Filed
Not available
Date Issued
Tuesday, March 21, 1939
85 years ago
CPC
E04C2/041 - composed of a number of smaller elements
B28B19/0007 - for producing articles with exposed aggregate
E04C2002/008 - Panels with the appearance of a natural stone wall
US Classifications
052 - Static structures
125 - Stone working
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