Individual holder
CAMPBELL DOUGLAS S
US·2 granted patents·2 citations·filing 2012–2015
Individually held — no corporate assignee on record.
Technology mixE04G2
Top patents by PatentIndex Score
2 records- 0154US9157246B2Method and apparatus for selectively extruding and applying a layer of mortar upon a selected surfaceCAMPBELL DOUGLAS S·Filed 2012·Granted Oct 13, 2015·2 cites·14 claims
- 0232US10443250B2Method for continuously extruding and depositing an unbroken layer of mortar on a work surface or substrateCAMPBELL DOUGLAS S·Filed 2015·Granted Oct 15, 2019·0 cites·8 claims
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