Wendall Siemens — 5 Patents at Extreme Engineering

Wendall Siemens has been granted 5 US patents while listed as an inventor at Extreme Engineering. The first was granted in 2004 and the most recent in November 2010. Wendall Siemens ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Wendall Siemens in Calgary, AB, CA.

Issued Patents All Time

Showing 1–5 of 5 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
7839719	Fluid erosion protection washer for rotating shaft in MWD tool	Anthony R. Dopf, Trang Le, Derek W. Logan, Timothy Neff, Dave Switzer	2010-11-23	$57,761,000
7532540	Fluid erosion protection washer for rotating shaft in MWD tool	Anthony R. Dopf, Trang Le, Derek W. Logan, Timothy Neff, Dave Switzer	2009-05-12
7462957	Multi-conductor plug and socket apparatus	Paul L. Camwell, Derek W. Logan, Jili Liu	2008-12-09
6956791	Apparatus for receiving downhole acoustic signals	Anthony R. Dopf, Paul L. Camwell, Derek W. Logan	2005-10-18
6816053	Circuit to mitigate transformer shorted turn	Paul L. Camwell	2004-11-09

Wendall Siemens — 5 Patents

Issued Patents All Time

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