Electronic calculator having the functions of telephone book, address book, calendar, schedule book and memo book
USD421744S · kind S · design
38Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1999 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Mar 21, 2014 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.