| Patents for Samuel Duncan Black |
Patents 1 -
10
of 10
      |
| Picture | Number | Date | Patentee | Title |
 | 1,229,401 | Jun. 12, 1917 | S.D. Black, A.G. Decker | Drill gearing |
 | 1,245,860 | Nov. 06, 1917 | S.D. Black, A.G. Decker | Electrically-driven tool |
 | D57,576 | Apr. 26, 1921 | S.D. Black, A.G. Decker | Design for a portable electric tool |
 | D57,812 | May 10, 1921 | S.D. Black, A.G. Decker | Design for a housing for electric air compressors and motors |
 | 1,463,305 | Jul. 31, 1923 | S.D. Black, A.G. Decker | Pumping apparatus |
 | 1,492,095 | Apr. 29, 1924 | S.D. Black, A.G. Decker | Electrically-driven tool |
 | 1,548,020 | Aug. 04, 1925 | S.D. Black, A.G. Decker | Reversing means for electric tools |
 | 1,574,020 | Feb. 23, 1926 | S.D. Black, A.G. Decker | Electric-cord protector |
 | 1,699,870 | Jan. 22, 1929 | S.D. Black, A.G. Decker | Portable tool |
 | 1,702,245 | Feb. 19, 1929 | S.D. Black, A.G. Decker | Electrical connection for portable electric tools |
