Number | Date | Country | Kind |
---|---|---|---|
2-244180 | Sep 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
3537083 | Voth | Oct 1970 | |
4652499 | Howard | Mar 1987 | |
5016128 | DiIorio et al. | May 1991 |
Number | Date | Country |
---|---|---|
0200582 | Sep 1987 | JPX |
0146176 | Jun 1989 | JPX |
Entry |
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"Glass Substrate Disk", IBM Technical Disclosure Bulletin, vol. 12, No. 6, Nov. 1969, p. 766, B. Brezoczky. |