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| All Patents in class 83/521 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,830,579 | Nov. 03, 1931 | F.W. Wappat | Electric handsaw | handheld power tools | |
| 2,795,248 | Jun. 11, 1957 | O. Doerner | Eyeguard for power saw | handheld circular saws | |
| 3,303,861 | Feb. 14, 1967 | R.A. Kane | Saw structure | handheld power reciprocating saws | |
| 3,339,598 | Sep. 05, 1967 | L. Frostad | Saw structures | handheld power reciprocating saws | |
| 4,503,740 | Mar. 12, 1985 | R.D. Brand, R.D. Runyan | Optical cutting edge locator for a cutting apparatus | veneer machines | |