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Inventor: Helmut Wulz


Address: Birmensdorf, CH
No. of patents: 3
Last patent issue date: 12/06/1983

NumberTitleIssue Date
4418449Slide fastener
A slide fastener has a pair of tapes along confronting edges of which are provided respective rows of coupling elements in a ladder configuration with individual members being affixed together by a continuous textile strand, as one-arm rungs of the ladder...
12/06/1983
4290176Slide fastener and method of making same
A method of and an apparatus for the formation of slide-fastener stringers wherein coupling members of a thermoplastic synthetic resin are bent into a U configuration to straddle the edges of respective fabric support tapes also composed of thermoplastic ...
09/22/1981
3980294Photocopying machines
A photocopying machine which includes a band conveyor for transporting sheet material through the machine, the conveyor including end drums supporting a band of seamless and endless perforated metal with its upper run disposed over a suction chamber....
09/14/1976
 
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