Patent for improved smoking equipment stems which prevents saliva from running down the stem. The end of the stem has a new design which extends upwards and then wraps forward and downward, leaving a slot where no saliva can enter.
Patent for this invention has relation to the type of engines combining rotary and reciprocating movements in one structure, the purpose being to combine the working elements in such relation as to convert maximum percentage of force into available form for the performance of work.
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