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Threaded roofing fasteners
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Improvements relating to bolts
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Improvements relating to threaded fasteners
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An improved fatener
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Fasteners
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An improved marketing method
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Sealing washer assembly
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Improved roofing fastener assembly winrowing apparatus for peanut digger
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Improvements relating to the formation of fastening elements
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An improved fastener and method of making same
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Improvements relating to fasteners
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An improved sealing washer
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Improvements in sealing washers for use with roofing screws
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Improvements in sealing washers
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Improvements in washers
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A sealing washer assembly
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