D. R. Sperry & Co AdvertisementProduct Code: 653
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Title: D. R. Sperry & Co Advertisement
There is a list of "advantages of the Sperry Filter Press" and on that list it says, "Can use cotton cloth, wire, wool, asbestos, glass, vinyon, and many other kinds of filter cloths."
D. R. Sperry & Co
Filtration Engineers and Filter Press Manufacturers
4 pages with product descriptions and pictures
Date: No copyright date, but this was removed from a 1944-1945 bound collection.
Condition: Good. Pages are partially separated. Other company ads are printed on the back of the first and last pages.