2 trademarks were found for owners matching the name Douglas John Whitfield.
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1 TM: 1730285
Desc: AERO ADVISOR
Owner: Douglas John Whitfield
Class: 39
Status: Registered: Registered/protected
2 TM: 1701812
Desc: AERO-ADVISOR
Owner: Douglas John Whitfield
Class: 39
Status: Registered: Registered/protected