Inventor

PORTER ROBERT CRISPIN

US3 patents

⚠️ This page may combine multiple inventors who share the name “PORTER ROBERT CRISPIN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

MACRAE JONATHAN

2 patents

US8607876B2Dec 17, 2013

Flapper valve

MACRAE JONATHAN3 citations54

US8844618B2Sep 30, 2014

Smart drop-off tool and hang-off tool for a logging string

MACRAE JONATHAN0 citations47

SCHLUMBERGER TECHNOLOGY CORP

1 patent

US9010427B2Apr 21, 2015

Smart Drop-off tool and hang-off tool for a logging string

SCHLUMBERGER TECHNOLOGY CORP3 citations59