Heater for plastic or polyvinyl chloride conduit
USD312682S · kind S · design
0Cited by
2References
1Claims
0Family size
Inventors
Key dates
| Filing date | Jan 19, 1988 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Dec 4, 2004 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.