Assignee
ARMSTRONG RONALD
CA·4 granted patents·0 citations·filing 2014–2017
Technology mixE02D4
Top patents by PatentIndex Score
4 records- 0154US10030351B2Manhole frame with one or more handholdsARMSTRONG RONALD·Filed 2017·Granted Jul 24, 2018·0 cites·5 claims
- 0254US10030352B2Manhole frame with one or more handholdsARMSTRONG RONALD·Filed 2017·Granted Jul 24, 2018·0 cites·5 claims
- 0354US10030350B2Manhole frame with one or more handholdsARMSTRONG RONALD·Filed 2017·Granted Jul 24, 2018·0 cites·5 claims
- 0454US9845586B2Manhole frame with one or more handholdsARMSTRONG RONALD·Filed 2014·Granted Dec 19, 2017·0 cites·8 claims
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