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Koehler, Joseph
This patent model demonstrates an invention for a bed that could be adjusted for stones that were thicker at one end than the other; the invention was granted patent number 53309.
Koehler, Joseph · ca 1887
Koehler, Joseph · ca 1889
Koehler, Joseph · ca 1889
Currier & Ives · ca 1889
Currier & Ives · ca 1889
Currier & Ives · ca 1887