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BUILDING BLOCK, SYSTEM AND METHODS
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Stone Strong LLC
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John J. Gran
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Publication date May 16, 2024
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SINCE 1903, INC.
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John E. Ravelli
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Publication date Aug 19, 2021
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E.P. Henry Corporation
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John E. Ravelli
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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CULTURED STONE MASONRY UNIT
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Publication number 20120159888
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Publication date Jun 28, 2012
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David Aston
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B28 - WORKING CEMENT, CLAY, OR STONE
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RETAINING WALL BLOCK
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Publication number 20110179747
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Publication date Jul 28, 2011
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KEYSTONE RETAINING WALL SYSTEMS, INC.
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Robert A. MacDonald
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B28 - WORKING CEMENT, CLAY, OR STONE
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Publication number 20100064620
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Publication date Mar 18, 2010
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KEYSTONE RETAINING WALL SYSTEMS, INC.
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Robert A. MacDonald
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E04 - BUILDING
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Publication number 20090308015
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Publication date Dec 17, 2009
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KEYSTONE RETAINING WALL SYSTEMS, INC.
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Robert A. MacDonald
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B28 - WORKING CEMENT, CLAY, OR STONE
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RETAINING WALL BLOCK
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Publication number 20090103987
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Publication date Apr 23, 2009
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KEYSTONE RETAINING WALL SYSTEMS, INC.
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Robert A. MacDonald
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B28 - WORKING CEMENT, CLAY, OR STONE
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BUILDING BLOCK
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Publication number 20090049788
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Publication date Feb 26, 2009
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Douglas G. Thorpe
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E04 - BUILDING
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COLUMNAR BLOCK FENCE SYSTEM
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Publication number 20080172970
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Publication date Jul 24, 2008
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KEYSTONE RETAINING WALL SYSTEMS, INC.
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Robert A. MacDonald
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E04 - BUILDING
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Construction block
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Publication number 20060101762
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Publication date May 18, 2006
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Curtis W. Shillingburg
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E04 - BUILDING
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Publication number 20050257466
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Publication date Nov 24, 2005
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Masoud Tabeshnekoo
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E04 - BUILDING
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Column block system
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Publication number 20050252146
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Publication date Nov 17, 2005
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Robert A. MacDonald
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E04 - BUILDING
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Walling product
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Publication number 20050144883
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Publication date Jul 7, 2005
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W.J. Ladd (Concrete Products)
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Mathew Hopson
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E04 - BUILDING
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Prefab brickwork
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Publication number 20030145543
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Publication date Aug 7, 2003
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Wallace J. Lane
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B44 - DECORATIVE ARTS
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