Number | Date | Country | Kind |
---|---|---|---|
2-417122 | Dec 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
4802747 | Horiuchi | Feb 1989 | |
4818083 | Mihara | Apr 1989 | |
4859042 | Tanaka | Aug 1989 | |
4995707 | Hashimoto | Feb 1991 |
Number | Date | Country |
---|---|---|
0082812 | May 1982 | JPX |
8706717 | Nov 1987 | WOX |
Entry |
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86 Optik, 73 (1986), "A novel configuration of zoom lens", Kazuo Tanaka, Video Products Development Center, Canon Inc., Japan. |