Number | Name | Date | Kind |
---|---|---|---|
4007982 | Stange | Feb 1977 | |
4111546 | Maret | Sep 1978 | |
4121947 | Hemphill | Oct 1978 | |
4653758 | Trimmer et al. | Apr 1972 | |
4684242 | Schultz | Aug 1987 | |
4804999 | Mueller | Feb 1989 | |
4833503 | Snelling | May 1989 |
Number | Date | Country |
---|---|---|
58-46372 | Mar 1983 | JPX |
58-219584 | Dec 1983 | JPX |
60-6977 | Jan 1985 | JPX |
60-176078 | Oct 1985 | JPX |
Entry |
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Xerox Disclosure Journal, "Floating Diaphragm Vacuum Shoe", Hull et al., vol. 2, No. 6, Nov./Dec. 1977, pp. 117-118. |
"Modern Piezoelectric Ceramics", Vernitron Piezoelectric Division, Bedford, Ohio. |