Number | Name | Date | Kind |
---|---|---|---|
D104064 | Hamilton | Apr 1937 | |
D309944 | Chiu | Aug 1990 | |
D315018 | Wang | Feb 1991 | |
D317199 | Wang | May 1991 | |
D374071 | Wang et al. | Sep 1996 | |
5547343 | Jane et al. | Aug 1996 |
Entry |
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Hong Kong Enterprise Oct. 1993, p. 400, Piano Key Fan A, middle of page. |