Inventor

CUMMING FRANCIS ALEXANDER

NL3 patents

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

SHELL OIL CO

2 patents

US6070671AJun 6, 2000

Creating zonal isolation between the interior and exterior of a well system

SHELL OIL CO408 citations96

US6244337B1Jun 12, 2001

System for sealing the intersection between a primary and a branch borehole

SHELL OIL CO22 citations90

SHELL RES LTD

1 patent

US6078031AJun 20, 2000

Method and device for joining oilfield tubulars

SHELL RES LTD148 citations92