External heat exchanger for upholstery and carpet cleaning equipment
USD326545S · kind S · design
1Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 31, 1989 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | May 26, 2006 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.