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| All Patents in class 428/932 | |||||
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| Number | Date | Patentee | Title | Type | |
| 334,567 | Jan. 19, 1886 | G.N. Clemson | Saw (hardening method) | ||
| 2,455,183 | Nov. 30, 1948 | F.H. Lobdell | Tool | ||
| 2,791,248 | May 07, 1957 | D.D. Beale | Plated saw blade | sawblades | |