Keywords: Excavating bucket.jpg en Excavating bucket invention by Charles B King http //www google com/patents id GjllAAAAEBAJ pg PA1 dq 22CB+King 22 as_drrb_is b as_minm_is 1 as_miny_is 1912 as_maxm_is 12 as_maxy_is 1922 source gbs_selected_pages cad 2 v onepage q 22CB 20King 22 f false United States Patent Office 1913 PD-USGov U S Patent drawings |