Number | Name | Date | Kind |
---|---|---|---|
2276869 | Pond | Mar 1942 | |
2295155 | Brown et al. | Sep 1942 | |
2390680 | Ausherman | Dec 1945 | |
2635301 | Schubert et al. | Apr 1953 | |
2697254 | Gordon | Dec 1954 | |
2732928 | Schreiber | Jan 1956 | |
2743758 | Uschmann | May 1956 | |
2828853 | Hart | Apr 1958 | |
2892216 | Steel | Jun 1953 | |
2943365 | Erickson et al. | Jul 1960 | |
3114722 | Einhorn et al. | Dec 1963 | |
3401128 | Terry | Sep 1968 | |
3746610 | Hoegger | Jul 1973 | |
4060579 | Schmitzer et al. | Nov 1977 | |
4111744 | Reiniger | Sep 1978 |
Number | Date | Country |
---|---|---|
2423359 | Jan 1975 | DEX |
Entry |
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"Whittington's Dictionary of Plastics", by Lloyd R. Whittington, Stamford, Conn., Technomic, c1968, Preface, pp. 98-101. |
"Webster's New Collegiate Dictionary", Springfield, Mass., G. & C. Merriam Co., c1961, p. 294. |