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Inventor

JOHNSTONE DAVID

US5 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSTONE DAVID”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JOHNSTONE DAVID

3 patents
US9302721B1Apr 5, 2016

Track driven sub-base assembly

JOHNSTONE DAVID1 citations46
US8905165B1Dec 9, 2014

Track driven sub-base assembly

JOHNSTONE DAVID0 citations46
US8550193B1Oct 8, 2013

Track driven sub-base assembly

JOHNSTONE DAVID0 citations46

AMERICAN EXPRESS TRAVEL RELATE

2 patents
US7835960B2Nov 16, 2010

System for facilitating a transaction

AMERICAN EXPRESS TRAVEL RELATE322 citations97
US7627531B2Dec 1, 2009

System for facilitating a transaction

AMERICAN EXPRESS TRAVEL RELATE408 citations97