Assignee

JOHNSTON DAVID A

AU·2 granted patents·14 citations·filing 1991–2005

Technology mixB06B1 B63C1 G05B1 G06F1 G08B1 G10K1

Top patents by PatentIndex Score

2 records

0150US8942834B2Method and apparatus for communicating transactions between an industrial controller and a programming interfaceJOHNSTON DAVID A·Filed 2005·Granted Jan 27, 2015·1 cites·26 claims
0241US5302055ASignalling deviceJOHNSTON DAVID A·Filed 1991·Granted Apr 12, 1994·13 cites·19 claims

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