Inventor · disambiguated record

Mark Hapstack

Also filed as: HAPSTACK MARK

2 granted patents·218 citations·filing 1990–1991

71Inventor score

Technology areasF17D G01N

Files withUS ARMY1 US ENERGY1

Top patents by PatentIndex Score

2 records

0189US5018451AExtendable pipe crawlerUS ENERGY·Filed 1990·Granted May 28, 1991·91 cites·8 claims
0288US5285689APiping inspection instrument carriage with precise and repeatable position control and location determinationUS ARMY·Filed 1991·Granted Feb 15, 1994·127 cites·19 claims

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →