Patents for H. G. Spafford, deceased (Estate of)


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Patents for H. G. Spafford, deceased (Estate of)
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Number	Date	Patentee	Title	Type
NX-183,307,021	Jul. 02, 1833	H.G. Spafford, deceased (Estate of), E. Spafford, administratrix	Steam, and condensed air, applying