Assignee
JOHNSON JR ALVIN C
US·2 granted patents·0 citations·filing 2014–2015
Top patents by PatentIndex Score
2 records- 0146US9284619B2System and method for recovering precious metals from precursor-type ore materialsJOHNSON JR ALVIN C·Filed 2014·Granted Mar 15, 2016·0 cites·20 claims
- 0241US9315879B2System and method for recovering precious metals from precursor-type ore materialsJOHNSON JR ALVIN C·Filed 2015·Granted Apr 19, 2016·0 cites·19 claims
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