Number | Date | Country | Kind |
---|---|---|---|
9003472 | Feb 1990 | GBX |
Number | Name | Date | Kind |
---|---|---|---|
2789024 | Heisler | Apr 1957 | |
3270253 | Binder et al. | Aug 1966 | |
3448346 | Webb | Jun 1969 | |
3592260 | Berger | Jul 1971 | |
4648007 | Gamer | Mar 1987 | |
4660125 | Purdy et al. | Apr 1987 | |
4739444 | Zushi et al. | Apr 1988 | |
4748540 | Heinzeberg et al. | May 1988 | |
4901200 | Mazura | Feb 1990 |
Number | Date | Country |
---|---|---|
1131689 | Oct 1968 | EPX |
1318986 | May 1973 | EPX |
0320107 | Jun 1989 | EPX |
0320720 | Jun 1989 | EPX |
0328260 | Aug 1989 | EPX |
2133082A | Jul 1984 | GBX |
2210416 | Dec 1988 | GBX |
Entry |
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"Gate/Shutter Airflow Control Device", IBM Technical Disclosure Bulletin, vol. 32, No. 3A, Aug. 1989. |
Inter-Noise Conference Proceedings Dec. 1989, Newport Beach, U.S. pp. 151-156 David S. Gaunt: "The Design and Development of a Low Noise DC Motor Driven Centrifugal Fan". |
Electronic Packaging and Production, vol. 30, No. 2, 1 Feb. 1990, Newton, Mass. U.S. pp. 181-185; Timothy S. Burke: "Forced Air Keeps Electronics Cool". |