The Architect & engineer of California and the Pacific Coast (1905)
San Francisco, Calif. : Architect and Engineer Co · leaf 282
ting to BuildingConstruction Material for this department is compiledexpressly for the Architect and Engineer by Wat-son & Boyden, patent and trade-mark lawyers andsolicitors, 918 F street, Washington, I). C, and tothem all inquiries in regard to patents, trade-marks, co])yrights, etc., and… … Frank D. Robbins, of Oakland, Cal.— Combined Mixer and Carrier.977,679. Patented Dec. 6, 1910. Thi.s invention seeks to provide a de-vice for mixing and transporting con-crete at the same time. It consists ofa drmn A supported on a shaft mountedon two large wheels like a push cart. Inoperation…
Architecture · Building
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