Number | Name | Date | Kind |
---|---|---|---|
3856431 | Tucker | Dec 1974 | |
4746266 | Kirchner et al. | May 1988 | |
4887940 | Todoroki et al. | Dec 1989 | |
5221185 | Pla et al. | Jun 1989 |
Number | Date | Country |
---|---|---|
0010412 | Jan 1979 | JPX |
0222998 | Dec 1983 | JPX |
0231394 | Sep 1993 | JPX |
Entry |
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"Active Control of Sound", by P. A. Nelson et al., Institute of Sound and Vibration Research, The University, Southampton,, U.K., Academic Press, 1992, pp. 122-126. |
Applicant's attached statement entitled "Microwave Oven Fan Assembly", offered for sale more than one year prior to filing date. |