Patent US634417 Stampmill. Google Patents
No. 634,4. Patented Oct. 3, I899. A. c. PRATT c. A. LA GRAVE. STAMP MILL. (Application filed May 14, 1898. (No Model.) 2 Sheets8heet l, Q INVENTORS law 3 W A/lvrney N0. 634,40. Patented Oct. 3, I899. A. C. PRATT ...