Inventor
GIUSTI JR FRANK
US11 patents
⚠️ This page may combine multiple inventors who share the name “GIUSTI JR FRANK”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OTIS ENG CO
7 patentsUS4813481AMar 21, 1989
Expendable flapper valve
OTIS ENG CO113 citations94
US4846281AJul 11, 1989
Dual flapper valve assembly
OTIS ENG CO90 citations93
US4840229AJun 20, 1989
Multiple position service seal unit with positive position indicating means
OTIS ENG CO36 citations89
US4832129AMay 23, 1989
Multi-position tool and method for running and setting a packer
OTIS ENG CO44 citations89
US4722392AFeb 2, 1988
Multiple position service seal unit with positive position indicating means
OTIS ENG CO34 citations89
US5117906AJun 2, 1992
Compact, retrievable packer
OTIS ENG CO21 citations82
US4886113ADec 12, 1989
Positive indication shear ring
OTIS ENG CO19 citations82