rapid and accurate draughtsman. Bethlehem Steel Co. South Bethlehem Penn. NOVELTIES & PATENTED ARTICLES 50 YEARS' EXPERIENCE Gas Engine Construction By HENRY V. A. PARSELL. Jr. Pem. A. I. Elec. Eng. and ARTHUR 1. WEED M. E. PROFUSELY ILLUsTRATED. Price $ postpaid. the sizes and forms of the various details. SCIENTIFIC AMERICAN OFFICE Experimental & Model Work PI:! VAPOR LAUNCH!:, 1900-06-09


rapid and accurate draughtsman. Bethlehem Steel Co. South Bethlehem Penn. NOVELTIES & PATENTED ARTICLES 50 YEARS' EXPERIENCE Gas Engine Construction By HENRY V. A. PARSELL. Jr. Pem. A. I. Elec. Eng. and ARTHUR 1. WEED M. E. PROFUSELY ILLUsTRATED. Price $ postpaid. the sizes and forms of the various details. SCIENTIFIC AMERICAN OFFICE Experimental & Model Work PI:! VAPOR LAUNCH!:, 1900-06-09


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