Number | Name | Date | Kind |
---|---|---|---|
3118095 | Baron et al. | Jan 1964 | |
3898541 | Weller | Aug 1975 | |
4193106 | Coleman | Mar 1980 | |
4433359 | Hamabe et al. | Feb 1984 | |
4466045 | Coleman | Aug 1984 |
Number | Date | Country |
---|---|---|
705353 | Mar 1954 | GBX |
Entry |
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IBM Technical Disclosure Bulletin, vol. 27, No. 4A, Sep. 1984, pp. 1884-1885. |