Assignee
GRAF RONALD EDWARD
US·2 granted patents·1 pending application·2 citations·filing 2008–2012
Top patents by PatentIndex Score
3 records- 0146US7874175B2Heat engine / heat pump using centrifugal fansGRAF RONALD EDWARD·Filed 2008·Granted Jan 25, 2011·2 cites·2 claims
- 0245US8087247B2Heat engine/ heat pump using centrifugal fansGRAF RONALD EDWARD·Filed 2008·Granted Jan 3, 2012·0 cites·11 claims
- 0340US2013167535A1Rotary Engine with Unidirectional Monatomic Gas Flow, Static Heat ExchangersGRAF RONALD EDWARD·Filed 2012·Application pending·0 cites
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