Number | Name | Date | Kind |
---|---|---|---|
3608246 | McCormack et al. | Sep 1971 | |
4269552 | Unigovsky et al. | May 1981 |
Number | Date | Country |
---|---|---|
2424100 | Dec 1979 | FRX |
43389 | Apr 1979 | JPX |
512039 | Jul 1976 | SUX |
704753 | Dec 1979 | SUX |
Entry |
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Portions of a brochure of E. H. Wachs Company. |