Number | Date | Country | Kind |
---|---|---|---|
2-28689 | Aug 1990 | JPX |
Number | Name | Date | Kind |
---|---|---|---|
D249091 | Bartis | Aug 1978 | |
D258966 | McCrae | Apr 1981 | |
D276536 | Siefert | Nov 1984 |
Entry |
---|
Hong Kong Enterprise, May 1986, p. 14, Round Simulative Calculators. |
Hong Kong Enterprise, Oct. 1989, p. 256, round currency calculator-top left of page. |