Number | Name | Date | Kind |
---|---|---|---|
3473462 | Imming | Oct 1969 | |
4102254 | Grant | Jul 1978 | |
4233889 | Nederman | Nov 1980 | |
4259897 | Nederman | Apr 1981 | |
4312645 | Mavros et al. | Jan 1982 | |
4335574 | Sato et al. | Jun 1982 | |
4389923 | Ludscheidt | Jun 1983 | |
4567817 | Fleischer et al. | Feb 1986 | |
4660465 | Jentzsch et al. | Apr 1987 | |
4699046 | Bellieni | Oct 1987 | |
4762054 | Melville et al. | Aug 1988 | |
4796520 | Kramer, Jr. | Jan 1989 | |
5092228 | Pfeiffer, Jr. et al. | Mar 1992 |
Number | Date | Country |
---|---|---|
194609 | Sep 1986 | EPX |
3407549 | Dec 1984 | DEX |
Entry |
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"Extraction Duct for Verticle Stack Exhaust Pipes CVSR-20", Filter Clean Corporation, Edison, N.J. |