KUTZNER + WEBER GMBH

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Patent Activity in the Last 10 Years

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4404956 Furnace with draft-limiter and ventilationExpiredApr 14, 81Sep 20, 83[F23L]
4384672 Draft limiting deviceExpiredJul 23, 81May 24, 83[F23N]
4264033 Shut-off plate for combustion spaces adjustable by motorExpiredApr 27, 78Apr 28, 81[H02K, B60T, G05D]

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