Infrared heating unit for rain relief
USD321056S · kind S · design
26Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Apr 10, 1989 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Oct 22, 2005 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.