2 trademarks were found for owners matching the name David William Shannon.
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1 TM: 503983
Desc: PORTAMILL
Owner: David William Shannon
Class: 7
Status: Removed
Not renewed: Renewal fee not paid
2 TM: 1403638
Desc: TradeRack
Owner: Shannon Georgie McGuigan, David William McGuigan
Class: 6, 20
Status: Lapsed: Registration fee not paid on time