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Patents for H. J. Spooner
Patents 1 - 2 of 2
Number	Date	Patentee	Title	Type
RE4,197	Dec. 13, 1870	S. Darling	Improvment in Inkstands	draftsman
111,435	Jan. 31, 1871	S. Darling	Improvment in Inkstands	draftsman

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