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Inventor
BOWMAN LEWIS A
US
2 patents
Patents
2 patents
US7645501B2
Jan 12, 2010
Multi-layered sports playing field with a water draining, padding layer
BROCK USA LLC
23 citations
87
US7244477B2
Jul 17, 2007
Multi-layered sports playing field with a water draining, padding layer
BROCK USA LLC
40 citations
87