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Doing research in 19th-century American patent
records is notoriously difficult. Fortunately, historian Carolyn C. Cooper
has provided expert guidance, reproduced with permission here.
From: Carolyn C. Cooper, "Thomas
Blanchard's Woodworking Machines: Tracking 19th-Century Technological
Diffusion," in IA, The Journal of the Society for
Industrial Archeology, vol. 13, no. 1 (1987): 41-54.
Click the links below to specific parts of the instructions . . .
or download
all three as a single document in PDF format --
283K and you'll need the free software Acrobat
Reader to view it, but it's better for viewing and printing.
"How to Find Assignment Records . . .
." (50K)
"How to Find Litigation Records . . .
." (54K)
"How to Find Extension Records . . .
." (33K)
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