| Patents for Leslie S. Hall |
Patents 1 -
10
of 18
      |
| Picture | Number | Date | Patentee | Title |
 | CA-243,035 | Sep. 16, 1924 | L.S. Hall | Pipe threading machine |
 | 1,527,185 | Feb. 24, 1925 | L.S. Hall | Pipe-threading machine |
 | CA-248,427 | Mar. 31, 1925 | L.S. Hall | Pipe threading machine |
 | CA-253,990 | Sep. 22, 1925 | L.S. Hall | Lubricating device for threading machines |
 | CA-253,991 | Sep. 22, 1925 | L.S. Hall | Cutting off and reaming attachment for threading machines |
 | CA-253,992 | Sep. 22, 1925 | L.S. Hall | Steadying block for threading machines |
 | CA-253,993 | Sep. 22, 1925 | L.S. Hall | Die head for threading machines |
 | CA-253,994 | Sep. 22, 1925 | L.S. Hall | Chaser bit holder for threading machines |
 | CA-255,579 | Nov. 17, 1925 | L.S. Hall | Pipe threading machine |
| | 1,576,652 | Mar. 16, 1926 | L.S. Hall | Pipe Threading Machine |
