Number | Name | Date | Kind |
---|---|---|---|
2977993 | Scherer | Apr 1961 | |
2989087 | Higgins | Jun 1961 | |
3339003 | Cessna | Aug 1967 | |
3374503 | Boniger | Mar 1968 | |
3587654 | Yocum | Jun 1971 | |
3870741 | Kuhn | Mar 1975 | |
4279850 | Lynch | Jul 1981 | |
4358547 | Cuscurida et al. | Nov 1982 |
Number | Date | Country |
---|---|---|
2294931 | Dec 1974 | FRX |
2391120 | May 1977 | FRX |
Entry |
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Article entitled "Grundlagen der Kunststoffverarbeitung" by W. Knappe, published by Carl Hanser Verlag Munchen (1970), pp. 171-174. |