Number | Name | Date | Kind |
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2208569 | Blanchard | Jul 1940 | |
3457328 | Blatz | Jul 1969 | |
4314056 | Brewer et al. | Feb 1982 | |
4329447 | Brewer et al. | May 1982 | |
4465768 | Ueno et al. | Aug 1984 |
Entry |
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