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| Patents for E. Luff | |||||
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| Number | Date | Patentee | Title | Type | |
| 772,154 | Oct. 11, 1904 | C.A. Juengst | Cold-metal saw-blade | metal sawing machines | |
| 799,987 | Sep. 19, 1905 | C.A. Juengst | Cold-metal-sawing machine | metal sawing machines | |