Number | Name | Date | Kind |
---|---|---|---|
3315306 | Ladner et al. | Apr 1967 | |
3397428 | Donald | Aug 1968 | |
3479425 | Lefevre et al. | Nov 1969 | |
3511903 | Glass et al. | May 1970 | |
3761211 | Parkinson | Sep 1973 | |
3860372 | Newman, Jr. | Jan 1975 | |
4197069 | Cloeren | Apr 1980 | |
4533308 | Cloeren | Aug 1985 | |
4533510 | Nissel | Aug 1985 |
Number | Date | Country |
---|---|---|
55-28825 | Feb 1980 | JPX |
Entry |
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Photograph of 7-Layer, Dual Plane Coextrusion Feedback Having Vane Blades with Undercut Wall, of Cloeren Company. |