Free hand jointer device
作者： L Francis
DOI:
关键词: Blade (geometry) 、 Engineering drawing 、 Mechanical engineering 、 Engineering
摘要: An improved jointer device comprises removable blade attached to a plate member; in preferred embodiment, the member pair of halves between which is clamped.
lens.org 参考文章(2)
William Grundmann, Concrete-finishing tool ,(1916)
Lowell O Freeman, Adjustable concrete troweling tool ,(1955)