Assignee
STEPHENS PATRICK J
US·3 granted patents·162 citations·filing 1989–1991
Top patents by PatentIndex Score
3 records- 0196US5141363AMobile train for backfilling tunnel liners with cement groutSTEPHENS PATRICK J·Filed 1991·Granted Aug 25, 1992·87 cites·31 claims
- 0284US5241993AMethod for grouting cavities using a pumpable cement groutSTEPHENS PATRICK J·Filed 1991·Granted Sep 7, 1993·34 cites·6 claims
- 0377US5063967APumpable cement groutSTEPHENS PATRICK J·Filed 1989·Granted Nov 12, 1991·41 cites·7 claims
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