Suction drain guard for swimming pools
USD254928S · kind S · design
39Cited by
6References
1Claims
0Family size
Inventor
Key dates
| Filing date | Mar 15, 1977 |
| Grant date | May 6, 1980 |
| Priority date | — |
| Expiry date | May 6, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.