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| All Patents in class 134/64R | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,350,618 | Aug. 24, 1920 | C. Napier | Apparatus for making tempered blades | making sawblades | |
| 1,944,798 | Jan. 23, 1934 | W. Mellor | Means for Quenching Steels | ||