Number | Name | Date | Kind |
---|---|---|---|
2972554 | Muskat et al. | Feb 1961 | |
4046939 | Hart | Sep 1977 | |
4128513 | Errede et al. | Dec 1978 | |
4143118 | Laing | Mar 1979 | |
4202618 | Waschk et al. | May 1980 | |
4203734 | Winter et al. | May 1980 | |
4377334 | Nishikawa | Mar 1983 |
Entry |
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European Application No. 0038224, published 10/1981. |
Brown et al., IBM Technical Disclosure Bulletin, vol. 23, No. 12, 5/1981, pp. 5620-5621, "Integral Ozone Filtration System". |
Lynch, IBM Technical Disclosure Bulletin, vol. 24, No. 6, 11/1981, p. 2816, "Gettering Device for Vacuum Deposition". |
Laing et al., Xerox Disclosure Journal, vol. 6, No. 5, 9/10-1981, "Filtering Devices for use in Copying Machines". |