Number | Name | Date | Kind |
---|---|---|---|
1231030 | Kelley | Jun 1917 | |
2687895 | Rutledge | Aug 1954 | |
3058504 | Powers | Oct 1962 | |
3188109 | Broadrick | Jun 1965 | |
3353838 | Schmid | Nov 1967 | |
4062564 | Schimmeyer | Dec 1977 | |
4550930 | Proffit | Nov 1985 | |
4629202 | Nelson et al. | Dec 1986 |
Number | Date | Country |
---|---|---|
800918 | Sep 1958 | GBX |
Entry |
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European Patent Application 0 160 575, Nov. 6, 1985, Carolan. |