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Dale Campbell
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Savage, MN, US
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Patents Grants
last 30 patents
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Patent Grant
Expansion joint comprising a hybrid polyurea-polyurethane header co...
Patent number
10,138,606
Issue date
Nov 27, 2018
Construction Research & Technology GmbH
Dale Campbell
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Patents Applications
last 30 patents
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Patent Application
EXPANSION JOINT COMPRISING A HYBRID POLYUREA-POLYURETHANE HEADER CO...
Publication number
20140241787
Publication date
Aug 28, 2014
Dale Campbell
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES