Right angle trowel

作者: Wilfred J. Zieglmeier

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参考文章(8)
J Granger, Walking-type concrete edger ,(1971)
Albert G. Wesson, Cement finishing tool ,(1976)
Wesley D Lathrop, Alfred L Castle, Tape finishing tools for corners ,(1960)
Julius A Cinotti, Universal concrete edger ,(1960)
Jo W Tucker, Adjustable joint trowel ,(1956)
Bernhard F Thies, Tool for roughening sidewalks. ,(1904)
Charles Mason, Robert J Mckissick, Plasterer's trowel. ,(1910)
Charles A. Guerra, Cement finishing tool ,(1978)