2 trademarks were found for owners matching the name Ralph Donald Dervan.
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1 TM: 511905
Desc: ARUNDA
Owner: Ralph Donald Dervan, R.M. Colitti, Emilio A Maldonado
Class: 33
Status: Lapsed: Not accepted
2 TM: 491821
Desc: CHEMSORB
Owner: Ralph Donald Dervan, Murray Robert Lawrence
Class: 1
Status: Removed
Not renewed: Renewal fee not paid

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