Design of a universal portable electric drill . J. BURKE. UNIVERSAL PILED SEPT. 9, 1909. 1,053,940. Patented Feb. 18,1913. 3 SHEETS-SHEET 2, J^ /> > 1 /I \></ 1^. 1,053,940. J. BURKE. UNIVERSAL FILED SEPT. 9, 1909. Patented Feb. 18,1913. 3 SHEETS-SHEET 3.

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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttheses, bookyear1920