Inventor
PITTARD GERARD T
US16 patents
⚠️ This page may combine multiple inventors who share the name “PITTARD GERARD T”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GAS RES INST
7 patentsUS4694913ASep 22, 1987
Guided earth boring tool
GAS RES INST111 citations95
US4858704AAug 22, 1989
Guided earth boring tool
GAS RES INST38 citations92
US4632191ADec 30, 1986
Steering system for percussion boring tools
GAS RES INST49 citations92
US4621698ANov 11, 1986
Percussion boring tool
GAS RES INST46 citations92
US4880065ANov 14, 1989
Air motor operated rotary earth drilling tool
GAS RES INST35 citations91
US4949795AAug 21, 1990
Rotary rapid excavation system
GAS RES INST19 citations81
US5641909AJun 24, 1997
Scan assembly structure
GAS RES INST12 citations69