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| Patents for John A. Leland | |||||
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| Number | Date | Patentee | Title | Type | |
| 612,853 | Oct. 25, 1898 | J.A. Leland | Nail extractor | nail extractors | |
| 857,947 | Jun. 25, 1907 | J.A. Leland | Holdall Brace | brace chucks | |
| 912,582 | Feb. 16, 1909 | J.A. Leland | Chuck | brace chucks | |
| 929,231 | Jul. 27, 1909 | J.A. Leland | Bit Extension | drill bit extensions | |
| 935,266 | Sep. 28, 1909 | J.A. Leland | Ratchet-brace | ratchet braces | |
| 935,375 | Sep. 28, 1909 | J.A. Leland | Miter-Box | miter boxes | |
| 936,644 | Oct. 12, 1909 | J.A. Leland | Chuck | brace chucks | |
| 942,571 | Dec. 07, 1909 | J.A. Leland | Spiral screw-driver | spiral screwdrivers | |
| 942,572 | Dec. 07, 1909 | W.G. Stebbins, J.A. Leland | Automatic tool for boring | hand drills | |
| 974,896 | Nov. 08, 1910 | J.A. Leland | Chuck | brace chucks | |
| 988,723 | Apr. 04, 1911 | J.A. Leland | Change-speed gearing | eggbeater drills | |
| 992,218 | May 16, 1911 | J.A. Leland | Adjustable Handle for Saw Frames, &c. | saw handles | |
| 1,030,592 | Jun. 25, 1912 | J.A. Leland | Telescopic Extension-Rod | drill bit extensions | |
| 1,063,702 | Jun. 03, 1913 | J.A. Leland | Chuck | ||
| 1,063,984 | Jun. 10, 1913 | J.A. Leland | Hand Drill Gearing | eggbeater drills | |