Class 131/217 - Spiral passage

Subclass of Class 131 - Tobacco
Definition: Smoking devices in which the smoke passage or some part
No. of patents: 3
Last issue date: 03/05/1985

Number	Title	Issue Date
4502495	Apparatus for making helical center-cored smokers' filters and method There is disclosed apparatus and method for making helical center-cored smokers' filters from pipe cleaners or the like in which a guide for winding the pipe cleaner includes a thin walled metal tube with an inside diameter slightly smaller than the pipe ...	03/05/1985
4094508	Combination pipe and game device A combination pipe and game is disclosed. The pipe includes a base on which is mounted a transparent tube which may be in an aesthetically pleasing coiled shape. A mouth piece is attached to the ends of the tube. A pipe bowl is positioned along the tube a...	06/13/1978
3964493	Cigarette filter A filtered cigarette including a forward portion, a strainer and a filter, in which the filter is of molded plastic, having one or a plurality of surfaces provided with interconnected channels which provide long and tortuous paths through which the air-sm...	06/22/1976

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