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Retaining wall block
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Patent number D511579
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Issue date Nov 15, 2005
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Jagna Ltd.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall block
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Patent number D510144
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Issue date Sep 27, 2005
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Jagna Ltd.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall block
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Patent number D509910
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Issue date Sep 20, 2005
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Jagna Ltd.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall block
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Patent number D466229
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Issue date Nov 26, 2002
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall block
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Patent number D465855
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Issue date Nov 19, 2002
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall block
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Patent number D464440
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Issue date Oct 15, 2002
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall block
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Patent number D464149
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Issue date Oct 8, 2002
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Block
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Patent number D451207
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Issue date Nov 27, 2001
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Block
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Patent number D429005
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Issue date Aug 1, 2000
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D406358
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Issue date Mar 2, 1999
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D403785
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Issue date Jan 5, 1999
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D403438
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Issue date Dec 29, 1998
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D403437
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Issue date Dec 29, 1998
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Rothbury International Inc.
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall blocks
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Patent number 5,622,456
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Issue date Apr 22, 1997
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Rothbury Investments Ltd.
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Angelo Risi
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Retaining wall block
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Patent number D370272
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Issue date May 28, 1996
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Rothbury Investments Ltd.
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D346031
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Issue date Apr 12, 1994
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D341432
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Issue date Nov 16, 1993
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D340293
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Issue date Oct 12, 1993
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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Embankment reinforcing structures
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Patent number 5,064,313
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Issue date Nov 12, 1991
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Rothbury Investments Limited
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Angelo Risi
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Modular block
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Patent number D320088
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Issue date Sep 17, 1991
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D305938
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Issue date Feb 6, 1990
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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Modular block
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Patent number D301063
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Issue date May 9, 1989
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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Retaining wall system
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Patent number 4,815,897
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Issue date Mar 28, 1989
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Rothbury Investments Limited
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Angelo Risi
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E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
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Reversible modular coping block
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Patent number D299069
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Issue date Dec 20, 1988
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Rothbury Investments Limited
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Angelo Risi
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D25 - Building units and construction elements
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