Mark B. Siehling — 3 Patents at Conrac

Mark B. Siehling has been granted 3 US patents while listed as an inventor at Conrac. The first was granted in 1987 and the most recent in July 2017. Mark B. Siehling ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Mark B. Siehling in Hudsonville, MI, US.

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Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
D791847	Welding transformer	Donald B. DeCorte	2017-07-11
4943904	D.C. power unit assembly including unitized single-phase D.C. power units	Stanley R. Van Antwerp	1990-07-24
4682000	Welding transformer and rectifier assembly	Gary Edward Holt, Stanley R. Van Antwerp	1987-07-21

Mark B. Siehling — 3 Patents

Patents per Year

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