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Mini-programmable controller
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Patent number 4,282,584
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Issue date Aug 4, 1981
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Allen-Bradley Company
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Ronald A. Brown
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G05 - CONTROLLING REGULATING
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3891910
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Patent number 3,891,910
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Issue date Jun 24, 1975
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G05 - CONTROLLING REGULATING
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3609497
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Patent number 3,609,497
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Issue date Sep 28, 1971
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G05 - CONTROLLING REGULATING
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3175190
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Patent number 3,175,190
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Issue date Mar 23, 1965
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G05 - CONTROLLING REGULATING
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2820187
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Patent number 2,820,187
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Issue date Jan 14, 1958
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G05 - CONTROLLING REGULATING