Number | Name | Date | Kind |
---|---|---|---|
2305087 | Keller | Dec 1942 | |
2643811 | Bolding | Jun 1953 | |
2850224 | Meinhardt et al. | Sep 1958 | |
3185379 | Kohlhaas | May 1965 | |
4143803 | Taylor | Mar 1979 | |
4836383 | Gordon et al. | Jun 1989 | |
5076492 | Tupes | Dec 1991 | |
5242107 | De Nola | Sep 1993 | |
5366141 | Stone | Nov 1994 | |
5413276 | Sheffer | May 1995 |
Entry |
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The Wiley Encyclopedia of Packaging Technology, John Wiley &Sons, pp. 68-68, 1986. |