Inventor · disambiguated record

John Greff

Also filed as: GREFF JOHN

2 granted patents·0 citations·filing 2018–2021

26Inventor score

Technology areasE21B

Files withPACKERS PLUS ENERGY SERV INC2

Top patents by PatentIndex Score

2 records

0159US11629580B2Multi-zone single trip completion systemPACKERS PLUS ENERGY SERV INC·Filed 2021·Granted Apr 18, 2023·0 cites·18 claims
0250US11125060B2Multi-zone single trip completion systemPACKERS PLUS ENERGY SERV INC·Filed 2018·Granted Sep 21, 2021·0 cites·15 claims

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John Greff — Patent Inventor | PatentIndex