Assignee
POWELL DAVID W
3 granted patents·3 pending applications·39 citations·filing 1988–2018
Top patents by PatentIndex Score
6 records- 0173US7665250B2System for construction of a compression structure with corner blocks, key blocks, and corner block supportsPOWELL DAVID W·Filed 2004·Granted Feb 23, 2010·26 cites·27 claims
- 0263US10494771B1Precast park refuge construction method and apparatusPOWELL DAVID W·Filed 2018·Granted Dec 3, 2019·1 cites·14 claims
- 0357US2008282623A1Method and apparatus for precast wall and floor block systemPOWELL DAVID W·Filed 2008·Application pending·0 cites
- 0455US2007261335A1Precast construction method and apparatus for variable size elevated platformPOWELL DAVID W·Filed 2007·Application pending·0 cites
- 0550US2006150556A1Method and apparatus for precision slip-forming of complex precast shapesPOWELL DAVID W·Filed 2006·Application pending·0 cites
- 0648US4872265ATrimmer attachmentPOWELL DAVID W·Filed 1988·Granted Oct 10, 1989·12 cites·8 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →