Inventor · disambiguated record

Donald Ewing

Also filed as: EWING DONALD MARVIN · Ewing Donald

3 granted patents·7 citations·filing 2017–2020

59Inventor score

Technology areasE21B

Files withTRC SERVICES INC3

Top patents by PatentIndex Score

3 records

0183US10508522B2Automatic sucker rod spacing device and methods of using sameTRC SERVICES INC·Filed 2017·Granted Dec 17, 2019·5 cites·34 claims
0271US11199053B2Sucker rod with adhesive-attached end pieceTRC SERVICES INC·Filed 2020·Granted Dec 14, 2021·1 cites·20 claims
0367US11168549B2Automated sucker rod spacing device and associated methodsTRC SERVICES INC·Filed 2019·Granted Nov 9, 2021·1 cites·26 claims

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