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| Patents for Percy Leon Billingsley | |||||
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| Picture | Number | Date | Patentee | Title | |
| 955,749 | Apr. 19, 1910 | P.L. Billingsley | Dado machine | ||
 | 1,449,083 | Mar. 20, 1923 | P.L. Billingsley | Mortising device | |
 | 1,449,084 | Mar. 20, 1923 | P.L. Billingsley | Mortising device | |
 | 1,529,294 | Mar. 10, 1925 | P.L. Billingsley | Sawing device | |
| 1,530,028 | Mar. 17, 1925 | P.L. Billingsley | Planer | ||
 | 1,666,987 | Apr. 24, 1928 | P.L. Billingsley | Saw tooth | |
 | RE17,087 | Sep. 18, 1928 | P.L. Billingsley | Sawing device | |