| Patents for Leslie S. Hall |
Patents 1 -
15
of 18
      |
| Number | Date | Patentee | Title | Type |
| CA-243,035 | Sep. 16, 1924 | L.S. Hall | Pipe threading machine | pipe threading machines |
| 1,527,185 | Feb. 24, 1925 | L.S. Hall | Pipe-threading machine | pipe threading machines |
| CA-248,427 | Mar. 31, 1925 | L.S. Hall | Pipe threading machine | pipe threading machines |
| CA-253,990 | Sep. 22, 1925 | L.S. Hall | Lubricating device for threading machines | pipe threading machines |
| CA-253,991 | Sep. 22, 1925 | L.S. Hall | Cutting off and reaming attachment for threading machines | pipe threading machines |
| CA-253,992 | Sep. 22, 1925 | L.S. Hall | Steadying block for threading machines | pipe threading machines |
| CA-253,993 | Sep. 22, 1925 | L.S. Hall | Die head for threading machines | pipe threading machines |
| CA-253,994 | Sep. 22, 1925 | L.S. Hall | Chaser bit holder for threading machines | pipe threading machines |
| CA-255,579 | Nov. 17, 1925 | L.S. Hall | Pipe threading machine | pipe threading machines |
| 1,576,652 | Mar. 16, 1926 | L.S. Hall | Pipe Threading Machine | pipe threading machines |
| CA-260,513 | May 04, 1926 | L.S. Hall | Threading machine | pipe threading machines |
| 1,586,362 | May 25, 1926 | L.S. Hall | Gear box for threading machines and the like | pipe threading machines |
| CA-263,252 | Aug. 03, 1926 | L.S. Hall | Belt tensioning device | pipe threading machines |
| 1,603,280 | Oct. 19, 1926 | L.S. Hall | Die Head for Threading Machines and the Like | tap and die holders |
| 1,638,030 | Aug. 09, 1927 | L.S. Hall | Pipe Threading Machine | pipe threading machines |
