Class 52/726.5 - Chimney, flue, etc.

Subclass of Class 52 - Static structures (e.g., buildings)
Definition: Upright structure which is intended to function as an outlet
No. of patents: 3
Last issue date: 08/10/1999

Number	Title	Issue Date
5934035	Modular pillar The modular pillar is assembled by overlaying precast brick layers, one on top of the other to form a pillar of such layers. Each layer has a depression, groove, channel, cut-out, or the like, of recessing one of its horizontal surfaces for interlocking m...	08/10/1999
5398477	Shaft elements made from molding material A shaft element composed of molding material has a shaft member with a hollow interior, and at least one support provided in the interior of the shaft member so that a person can step on the support. The support is an integral component part of the shaft ...	03/21/1995
4573400	Insulated chimney pipes An insulated chimney pipe for use with boilers or open fires has a plurality of sections comprising an outer wall of galvanized steel connected by two end caps to an inner wall formed of a refractory material comprising alumino-silicate fibres bonded toge...	03/04/1986

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