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Processor for sewing machines
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Patent number 4,899,287
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Issue date Feb 6, 1990
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Quick-Rotan Elektromotoren GmbH
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Hartmut Hulshoff
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G05 - CONTROLLING REGULATING
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3638189
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Patent number 3,638,189
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Issue date Jan 25, 1972
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G05 - CONTROLLING REGULATING
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3548198
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Patent number 3,548,198
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Issue date Dec 15, 1970
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D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
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3432684
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Patent number 3,432,684
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Issue date Mar 11, 1969
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G05 - CONTROLLING REGULATING