Inventor · disambiguated record

Gailen D. Marshall

Also filed as: MARSHALL GAILEN · MARSHALL GAILEN D

2 granted patents·51 citations·filing 1980–1990

63Inventor score

Technology areasE21B

Files withNL INDUSTRIES INC1 SHAREWELL INC1

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2 records

0167US4388969ABorehole pipe side entry method and apparatusNL INDUSTRIES INC·Filed 1980·Granted Jun 21, 1983·41 cites·10 claims
0230US5105878AElectrical system including a connector, cable and cartridge for slant hole drillingSHAREWELL INC·Filed 1990·Granted Apr 21, 1992·10 cites·10 claims

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