Inventor

CLARK DOUGLAS ALAN

US2 patents

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

SPRINT COMM CO L P

1 patent

US6188753B1Feb 13, 2001

Method and apparatus for detection and prevention of calling card fraud

SPRINT COMM CO L P16 citations73

LINCOLN GLOBAL INC

1 patent

US10475353B2Nov 12, 2019

System for characterizing manual welding operations on pipe and other curved structures

LINCOLN GLOBAL INC2 citations69