Number | Name | Date | Kind |
---|---|---|---|
3272765 | Sefton | Sep 1966 | |
3563313 | Spangle | Feb 1971 | |
3804058 | Messenger | Apr 1974 | |
3899455 | Unterstenhoefer | Aug 1975 | |
4011355 | Mandish et al. | Mar 1977 | |
4306395 | Carpenter | Dec 1981 | |
4398958 | Hodson et al. | Aug 1983 | |
5105885 | Bray et al. | Apr 1992 | |
5133409 | Bour et al. | Jul 1992 | |
5268226 | Sweeney | Dec 1993 | |
5292467 | Mandish et al. | Mar 1994 | |
5336316 | Dawson et al. | Aug 1994 | |
5472498 | Stephenson et al. | Dec 1995 | |
5482550 | Strait | Jan 1996 |
Entry |
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Ronald D. Beck, Plastic Product Design, 2d Ed., Van Nostrand Reinhold Co., New York, 1980, pp. 85-88. |