Car-retarding and holding mechanism
作者： Glenn W. Merritt
DOI:
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摘要:
lens.org 参考文章(4)
Paul Klamp, Edward Mullen, Flush top rider chain for floor conveyers ,(1950)
Alfred M Acklin, Car-checking device. ,(1900)
Glenn W Merritt, Fluid-actuated car-moving apparatus ,(1953)
Frank R Hewitt, Log-moving machine. ,(1916)