Combination electromagnetically charged ball and cradle
USD656997S1 · kind S1 · design
20Cited by
19References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2010 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Apr 3, 2026 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.