Number | Date | Country | Kind |
---|---|---|---|
63-215095 | Aug 1988 | JPX | |
63-244581 | Sep 1988 | JPX | |
63-244583 | Sep 1988 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3356761 | Fox | Dec 1967 | |
3373226 | Gowan | Mar 1968 | |
3959211 | Cooper et al. | May 1976 | |
4680353 | Ishihara et al. | Jul 1987 | |
4946897 | Albizzati et al. | Aug 1990 |
Number | Date | Country |
---|---|---|
0262615 | Apr 1988 | EPX |
0291915 | Nov 1988 | EPX |
0314146 | May 1989 | EPX |
Entry |
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"Plastics Extrusion Technology", 2nd Ed. Allan L. Griff, consultant, Reinhold Book Corp., (1962) p. 116. |