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Method of charging a battery
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Patent number 5,329,218
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Issue date Jul 12, 1994
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Sten A. O. Rydborn
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H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Converter apparatus
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Patent number 5,216,317
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Issue date Jun 1, 1993
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Sten A. Rydborn
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G01 - MEASURING TESTING
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Thread signal emitter
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Patent number 4,884,763
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Issue date Dec 5, 1989
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Sten A. O. Rydborn
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D05 - SEWING EMBROIDERING TUFTING
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Indication device
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Patent number 4,455,549
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Issue date Jun 19, 1984
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Sten A. Rydborn
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B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
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