| Patents for Emma Spener |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 981,915 | Jan. 17, 1911 | N.D. Chard | Engine-lathe | metal lathes |
| 985,041 | Feb. 21, 1911 | W. Lodge | Diameter Gage for Lathes | metal lathe accessories and attachments |
| 1,007,181 | Oct. 31, 1911 | N.D. Chard | Lathe | metal lathes |
| 1,007,182 | Oct. 31, 1911 | N.D. Chard | Lathe | metal lathes |
| 1,022,721 | Apr. 09, 1912 | N.D. Chard | Lathe | metal lathes |
| 1,121,068 | Dec. 15, 1914 | N.D. Chard | Lathe | metal lathes |
| 1,133,064 | Mar. 23, 1915 | W.L. Schellenbach | Work-securing mechanism | metal lathes |
| 1,152,055 | Aug. 31, 1915 | W.L. Schellenbach | Multiple-tool holder | metal lathes |
| 1,154,939 | Sep. 28, 1915 | W. Lodge, N.D. Chard, W.L. Schellenbach | Narrow tool-support | metal lathes |
| 1,171,665 | Feb. 15, 1916 | W. Schellenbach | Projectile-turner | metal lathes |
| 1,171,666 | Feb. 15, 1916 | W. Schellenbach | Length-stop | metal lathes |
