John Engelhardt — 6 Patents at Underground Systems

John Engelhardt has been granted 6 US patents while listed as an inventor at Underground Systems. The first was granted in 2001 and the most recent in July 2013. John Engelhardt ranks #779,687 of 4,157,543 US inventors in our database (top 18.8%). Patent records list John Engelhardt in Greenwich, CT, US.

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Showing 1–6 of 6 patents

Patent #	Title	Co-Inventors	Date
8497781	Power supply and communications controller	Larry Fish	2013-07-30
RE44256	Electrical instrument platform for mounting on and removal from an energized high voltage power conductor	James A. Bright, Larry Fish, Paul A. Alex, Duncan Breese	2013-06-04
7733094	Electrical instrument platform for mounting on and removal from an energized high voltage power conductor	James A. Bright, Larry Fish, Paul A. Alex, Duncan Breese	2010-06-08
7641387	Power line temperature and sag monitor system	Larry Fish	2010-01-05
7504819	Dynamic line rating system with real-time tracking of conductor creep to establish the maximum allowable conductor loading as limited by clearance	—	2009-03-17
6262375	Room temperature dielectric HTSC cable	Steven A. Boggs	2001-07-17

John Engelhardt — 6 Patents

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