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| Patents for Charles E. Sandstrom | |||||
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| Number | Date | Patentee | Title | Type | |
| 645,607 | Mar. 20, 1900 | C.E. Sandstrom | Rip-saw for molding machines | molders | |
| 701,623 | Jun. 03, 1902 | C.E. Sandstrom | Sawing, jointing, and boring machine | drilling and boring | |