Number | Name | Date | Kind |
---|---|---|---|
2596514 | Uehlein | May 1952 | |
4552789 | Winchell | Nov 1985 | |
4855183 | Oberle | Aug 1989 | |
4894248 | Pappas et al. | Jan 1990 | |
5077064 | Hustad et al. | Dec 1991 | |
5395632 | Lawless et al. | Mar 1995 | |
5405629 | Marnocha et al. | Apr 1995 | |
5427807 | Chum et al. | Jun 1995 | |
5545420 | Lipinski et al. | Aug 1996 |
Entry |
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Marilyn Bakker, "The Wiley Encyclopedia of Packaging Technology", pp. 453, 481, 526 and 536 1986. |