A History of the Radiator
Brian Roberts & Paul Yunnie compiled this document that contains beautiful vintage advertisements and illustrations of radiators from the mid to late 1800s and early 1900...
Monoflo Tee Patent
Here is a patent issued to August Kehm for his tee fitting, later used by Bell & Gossett for their Monoflo. Thanks to Gerry Gill for the research, and for finding the patent.
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