Number | Name | Date | Kind |
---|---|---|---|
662345 | Britton et al. | Nov 1900 | |
2950029 | Winstead | Aug 1960 | |
2957614 | Krajcovic | Oct 1960 | |
3240415 | Pugh, Sr. | Mar 1966 | |
3279679 | Engelsher et al. | Oct 1966 | |
3303984 | Jurena | Feb 1967 | |
3362607 | Weitzner | Jan 1968 | |
3367380 | Dickey | Feb 1968 | |
3462061 | Shore | Aug 1969 | |
3486679 | Pfahler | Dec 1969 | |
3730737 | Harvey et al. | May 1973 | |
3799914 | Schmit et al. | Mar 1974 | |
3874554 | Chang | Apr 1975 | |
3944124 | Hexel | Mar 1976 | |
4036392 | Martin | Jul 1977 | |
4043478 | Duncan | Aug 1977 | |
4243162 | Klygis | Jan 1981 | |
4407425 | Combs | Oct 1983 | |
4573631 | Reeves | Mar 1986 | |
4699318 | Donatello et al. | Oct 1987 | |
4718778 | Ichikawa | Jan 1988 | |
4781880 | Robbins, III | Nov 1988 | |
4798324 | Gannon | Jan 1989 | |
4816093 | Robbins, III | Mar 1989 | |
4830204 | Lin | May 1989 | |
4836970 | Robbins, III | Jun 1989 |
Number | Date | Country |
---|---|---|
213673 | Mar 1987 | EPX |
2631437 | Feb 1977 | DEX |
8702873 | May 1987 | WOX |
978901 | Jan 1965 | GBX |
Entry |
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"Making it Harder for Kids to Spill", Wall Street Jounal, May 31, 1989, page B1. |