Patents Granted on 1803-07-21


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Patents Granted on 1803-07-21
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
473X	Jul. 21, 1803	D. Lownes	Method of cooling liquors
474X	Jul. 21, 1803	D. Lownes	Method of securing leaden or other pipes from frost	pipes