Number | Name | Date | Kind |
---|---|---|---|
3823201 | Pizzini et al. | Jul 1974 | |
3983094 | O'Shea | Sep 1976 |
Number | Date | Country |
---|---|---|
1,120,223 | Jul 1968 | GBX |
1,321,697 | Jun 1973 | GBX |
1,412,797 | Nov 1975 | GBX |
1,428,737 | Mar 1976 | GBX |
Entry |
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Journal of Cellular Plastics, Mar./Apr. 1972, pp. 90-99, Powell et al. |
Advances in Urethane Science and Technology, vol. 3, 1974, pp. 108-129, Fabres. |
Journal of Cellular Plastics, Sep./Oct. 1973, pp. 219-225, Hogan et al. |