2 trademarks were found for owners matching the name David Ohara.
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1 TM: 1834307
Desc: Techknow
Owner: David Mathew O'Hara & John Noel Rogers
Class: 37
Status: Registered: Registered/protected
2 TM: 1631261
Desc: Techknow
Owner: John Noel Rogers, David O'Hara
Class: 41
Status: Registered: Renewal due