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United States Utility Patents
4,925,520 - 4,925,529

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NumberTitle
4,925,520 Apparatus for applying an elastic waistband transversely of a longitudinally moving web
4,925,521 Apparatus for intermittently applying lengths of thermoplastic tape
4,925,522 Printed circuit assembly with contact dot
4,925,523 Enhancement of ultraviolet laser ablation and etching organic solids
4,925,524 Method for forming tungsten structures in a semiconductor
4,925,525 Process for producing a printed circuit board
4,925,526 Tube-type evaporator
4,925,527 Method for the recovery of turpentine and heat in a refiner pulping process
4,925,528 Manufacture of wetlaid nonwoven webs
4,925,529 Light-weight building boards based on mineral fibers and thermoplastic binders



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