Assignee
NORTH HOUSTON MACHINE INC
US·3 granted patents·48 citations·filing 1985–1995
Top patents by PatentIndex Score
3 records- 0159US5409324AHigh strength, quick connect/disconnect couplingNORTH HOUSTON MACHINE INC·Filed 1993·Granted Apr 25, 1995·21 cites·13 claims
- 0247US4660634AAutomatic drill pipe breakoutNORTH HOUSTON MACHINE INC·Filed 1985·Granted Apr 28, 1987·19 cites·5 claims
- 0341US5588772AHigh strength, quick connect/disconnect couplingNORTH HOUSTON MACHINE INC·Filed 1995·Granted Dec 31, 1996·8 cites·19 claims
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