Waters, John Louis, & company, Washington, D.C. [from old catalog] · Washington, D.C., J. L. Waters & co. · leaf 42
ts have been made to practically cool and ventilate carsby replacing vitiated air with successive or continuous charges of fresh airfrom the exterior. Some of these have been more or less successful, butin the present systems, under the most favorable circumstances, the appa-ratus used materially… … Witnesses I rrventor The above is a photographic reproduction of one sheet of official drawingexecuted by our Drafting Department in an important Motion PictureMachine case. 42 John Louis Waters & Compainy proper showing of the invention for the purpose of the patent,but copies of the patent…
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