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| 3776375 | Rohdin | Dec 1973 | |
| 3825112 | Shumaker et al. | Jul 1974 | |
| 3899100 | Rigaud | Aug 1975 | |
| 3949872 | Paudras | Apr 1976 | |
| 4005776 | Seeley | Feb 1977 | |
| 4019632 | Greenlee | Apr 1977 | |
| 4020694 | Mayhew | May 1977 | |
| 4084690 | Pulse | Apr 1978 | |
| 4324331 | Ignasiak | Apr 1982 | |
| 4449629 | Barrieau | May 1984 | |
| 4499353 | Shields | Feb 1985 | |
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| 4619364 | Czopor, Jr. | Oct 1986 | |
| 4650074 | Vosbikian | Mar 1987 | |
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| 4729473 | Kulzer et al. | Mar 1988 | |
| 4877130 | Matuz | Oct 1989 | |
| 4903829 | Clemens | Feb 1990 | |
| 4921096 | McFarlane | May 1990 | |
| 5048676 | Borgis et al. | Sep 1991 | |
| 5133454 | Hammer | Jul 1992 | |
| 5209354 | Thornhill et al. | May 1993 | |
| 5238107 | Kownacki | Aug 1993 | |
| 5279417 | Seaton | Jan 1994 | |
| 5279420 | Rodgers | Jan 1994 | |
| 5322162 | Melk | Jun 1994 | |
| 5425519 | Budert | Jun 1995 | |
| 5435447 | Weatherford et al. | Jul 1995 | |
| 5456057 | Bannon et al. | Oct 1995 | |
| 5484056 | Wood | Jan 1996 | |
| 5586657 | Ward et al. | Dec 1996 | |
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| Number | Date | Country |
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| 820419 | Nov 1951 | DE |
| 559 443 B1 | Aug 1993 | EP |
| Entry |
|---|
| Techform Inc. Nov. 1982. |
| Modern Packaging Catalog, p. 300—Jan. 1941 (no date). |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 29/104325 | May 1999 | US |
| Child | 29/119019 | US |