Number | Date | Country | Kind |
---|---|---|---|
2820802 | May 1978 | DEX |
Number | Name | Date | Kind |
---|---|---|---|
495228 | Parker | Apr 1893 | |
2117400 | Cobb | May 1938 | |
2313476 | Neff | Mar 1943 | |
2710425 | Rhodes | Jun 1955 | |
3015132 | Bunting | Jan 1962 | |
3069725 | Root | Dec 1962 | |
3124627 | Hood | Mar 1964 | |
3129270 | Hood | Apr 1964 | |
3173175 | Lemelson | Mar 1965 | |
3259175 | Kraus et al. | Jul 1966 | |
3345687 | Marx | Oct 1967 | |
3518725 | Donofrio | Jul 1970 | |
3671168 | Nussbaum | Jun 1972 | |
3680629 | Gaudreau et al. | Aug 1972 | |
3730665 | Fortin et al. | May 1973 | |
3733161 | Nussbaum | May 1973 | |
3812228 | Skoroszewski | May 1974 | |
3833329 | Ulmachneider et al. | Sep 1974 | |
3874830 | Carter et al | Apr 1975 | |
3957408 | Clymer et al. | May 1976 | |
4075301 | Oswald | Feb 1978 |
Number | Date | Country |
---|---|---|
1211792 | Mar 1966 | DEX |
Entry |
---|
Bender, Rene J. "Handbook of Foamed Plastics," Libertyville, Ill., Lake Publishing Corp., .COPYRGT.1965, pp. 215-220. |