Number | Date | Country | Kind |
---|---|---|---|
12-013087 | May 2000 | JP |
Number | Name | Date | Kind |
---|---|---|---|
433730 | Harker | Aug 1890 | |
3213914 | Baumle et al. | Oct 1965 | |
5531552 | Takahashi et al. | Jul 1996 | |
5549430 | Takahashi et al. | Aug 1996 |
Entry |
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Machine Design—The Fasteners Book; p. 133; Shakeproof Locknut w/flange, Sep. 29, 1960. |