Inventor · disambiguated record

J. Michael Stevenson

Also filed as: STEVENSON J MICHAEL

2 granted patents·117 citations·filing 1995–1997

69Inventor score

Files withKEYSTONE RETAINING WALL SYSTEMS INC2

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2 records

0189USD384168SPlantable wall blockKEYSTONE RETAINING WALL & SYSTEMS INC·Filed 1995·Granted Sep 23, 1997·67 cites·1 claims
0287USD397451SSection of a retaining wall with plantable blocksKEYSTONE RETAINING WALL SYSTEMS INC·Filed 1997·Granted Aug 25, 1998·50 cites·1 claims

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