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US Patent: 8,931
Window-blind machinery
Patentee:
Daniel H. Thompson - Springfield, MA

USPTO Classifications:
144/205, 408/30, 408/50

Tool Categories:
woodworking machines : specialty machines : windowblind machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Amos C. Morse
Asa L. French

Patent Dates:
Granted: May 04, 1852

Patent Pictures:
USPTO pdf tiff
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