Number | Name | Date | Kind |
---|---|---|---|
4583213 | Bracken et al. | Apr 1986 | |
4814906 | Suzuki et al. | Mar 1989 | |
5086422 | Hagiya et al. | Feb 1992 |
Number | Date | Country |
---|---|---|
WO900657 | Jun 1990 | EPX |
61-239482 | Oct 1986 | JPX |
62-40641 | Feb 1987 | JPX |
63-124282 | May 1988 | JPX |
63-269392 | Nov 1988 | JPX |
1-185840 | Jul 1989 | JPX |
1-287893 | Nov 1989 | JPX |
2-14483 | Jan 1990 | JPX |
2-31339 | Feb 1990 | JPX |
2-304767 | Feb 1990 | JPX |
2-105340 | Apr 1990 | JPX |
2-152028 | Jun 1990 | JPX |
2-187958 | Jul 1990 | JPX |
2-58789 | Nov 1990 | JPX |
2-276056 | Nov 1990 | JPX |
Entry |
---|
"Dust-Trapping Lens Shield", IBM Technical Disclosure Bulletin, G. M. Yanker, vol. 33, #10B, Mar. 1991, pp. 484-485. |