| Number | Date | Country | Kind |
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| 11-008871 | Jan 1999 | JP |
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| 4556769 | Inaba | Dec 1985 | A |
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| 5172990 | Weng | Dec 1992 | A |
| 5595285 | Santo | Jan 1997 | A |
| 5716274 | Goto et al. | Feb 1998 | A |
| 5821490 | Blossfeld | Oct 1998 | A |
| 6150621 | Nishitani et al. | Nov 2000 | A |
| 6192815 | Duttenhofer | Feb 2001 | B1 |
| 6239726 | Saida | May 2001 | B1 |
| 6242705 | Huang | Jun 2001 | B1 |
| Number | Date | Country |
|---|---|---|
| 0 572 860 | May 1993 | EP |
| 0 867 212 | Sep 1998 | EP |
| 2 288 282 | Oct 1995 | GB |
| 08007703 | Dec 1996 | JP |
| Entry |
|---|
| “Molded Push/Push Knob Design”; 2244 Research Disclosure; May 1, 1990; Industrial Opportunities Ltd. Havant, Emsworth, Great Britain; No. 313; p. 419; XP000114885. |