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Solid externally threaded fasteners having greatly increased ductility
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Hollow externally threaded fasteners having greatly increased ductility
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Method for creating overload protection against yielding in bolts
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Process for creating overload protection against yielding in bolts
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Process for the preuse work-hardening of bolts
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Two-part, two-material fastening element
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Automatic telephone timer
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Unbonded electric strain gage
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