Assignee
PENWELL CHRIS
US·4 granted patents·14 citations·filing 2011–2012
Top patents by PatentIndex Score
4 records- 0182US8553386B2Surge suppression device having one or more ringsPENWELL CHRIS·Filed 2011·Granted Oct 8, 2013·4 cites·20 claims
- 0274US8730640B2DC pass RF protector having a surge suppression modulePENWELL CHRIS·Filed 2011·Granted May 20, 2014·4 cites·20 claims
- 0372US8857459B2Internally powered earthquake triggered and electrically controllable shutoff valvePENWELL CHRIS·Filed 2012·Granted Oct 14, 2014·4 cites·14 claims
- 0444US8976500B2DC block RF coaxial devicesPENWELL CHRIS·Filed 2011·Granted Mar 10, 2015·2 cites·19 claims
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