Robert Grainger — 2 Patents | Patent Leaderboard

Robert Grainger has been granted 2 US patents. The first was granted in 2016 and the most recent in March 2017. Robert Grainger ranks #1,709,992 of 4,157,543 US inventors in our database (top 41.1%). Patent records list Robert Grainger in Regina, SK, CA.

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Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
9605510	Non-rotating connector for wellbore cementing tool	—	2017-03-28
9441450	Wellbore cementing tool	—	2016-09-13

Robert Grainger — 2 Patents

Issued Patents All Time

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