Number | Name | Date | Kind |
---|---|---|---|
2607653 | Fuerst | Aug 1952 | |
2625973 | Weldon et al. | Jan 1953 | |
3266656 | Kridle | Aug 1966 | |
3853367 | Jamison et al. | Dec 1974 | |
3907050 | Mullings | Sep 1975 | |
3966285 | Porch et al. | Jun 1976 | |
4102557 | Lee et al. | Jul 1978 | |
4673087 | Webb | Jun 1987 | |
5123541 | Giannini et al. | Jun 1992 |
Entry |
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Undated drawing of Malba Hamper from Zenith Products Corporation (one page). |