Marvin E. Janda — 3 Patents at Conoco

Marvin E. Janda has been granted 3 US patents while listed as an inventor at Conoco. The first was granted in 1990 and the most recent in June 1994. Marvin E. Janda ranks #1,328,092 of 4,157,543 US inventors in our database (top 31.9%). Patent records list Marvin E. Janda in Ponca City, OK, US.

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
5321213	Downhole epicyclic motion orbital seismic source	Jack H. Cole, Paul L. Buller, John B. Sinton	1994-06-14
5285023	Downhole hydraulic rotary seismic source	Jack H. Cole	1994-02-08
4958170	Multiple film width transport adaptor	Bernard A. Schwartz, Tommy L. Tew	1990-09-18

Marvin E. Janda — 3 Patents

Issued Patents All Time

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