Number | Name | Date | Kind |
---|---|---|---|
D115512 | Barber | Jul 1939 | |
D165946 | Thompson | Feb 1952 | |
D273210 | Nakao et al. | Mar 1984 | |
D321730 | McElhaney | Nov 1991 | |
3733741 | Pysa | May 1973 |
Entry |
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Royal Co., Ltd. catalogue, 1991, Product Nos. 3003, 3022 and 3201, pp. 4-5. |