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Distributed input/output system
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Patent number 4,870,564
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Issue date Sep 26, 1989
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GE Fanuc Automation North America, Inc.
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William J. Ketelhut
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G06 - COMPUTING CALCULATING COUNTING
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Distributed input/output system
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Patent number 4,764,868
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Issue date Aug 16, 1988
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General Electric Co.
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William J. Ketelhut
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G06 - COMPUTING CALCULATING COUNTING
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Memory-programmable controller
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Patent number 4,592,010
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Issue date May 27, 1986
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Siemens Aktiengesellschaft
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Dieter Wollscheid
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G05 - CONTROLLING REGULATING
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Modular programmable controller
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Patent number 4,442,504
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Issue date Apr 10, 1984
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Allen-Bradley Company
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Ernst H. Dummermuth
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G06 - COMPUTING CALCULATING COUNTING
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Sequence control apparatus
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Patent number 4,432,047
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Issue date Feb 14, 1984
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Toshiba Kikai Kabushiki Kaisha
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Yoshihiko Okayama
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G05 - CONTROLLING REGULATING
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Oxygen scavenging with enzymes
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Patent number 4,414,334
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Issue date Nov 8, 1983
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Phillips Petroleum Company
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Donald O. Hitzman
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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Sequence control system
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Patent number 4,298,958
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Issue date Nov 3, 1981
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Hitachi, Ltd.
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Masaoki Takaki
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G05 - CONTROLLING REGULATING
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