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United States Utility Patents
4,930,540 - 4,930,549

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NumberTitle
4,930,540 Flow diverter for a vehicle heating system
4,930,541 Variable orifice diverter valve
4,930,542 Method for restoring underground pipelines
4,930,543 Protective cover for hose connectors
4,930,544 Double-containment thermoplastic pipe assembly
4,930,545 Sausage casing with improved uniformity of diameter
4,930,546 Heat-insulating metal-ceramic structure
4,930,547 Powder-filled welded steel tube and method for the continuous manufacture thereof
4,930,548 Ball-lock tie application tool and method of use
4,930,549 Washing machine hose protector



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