Paddle wheel apparatus
USD254485S · kind S · design
3Cited by
1References
1Claims
0Family size
Inventor
Key dates
| Filing date | Jan 12, 1978 |
| Grant date | Mar 18, 1980 |
| Priority date | — |
| Expiry date | Mar 18, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.