Motorized invalid chair transport vehicle
USD320579S · kind S · design
6Cited by
12References
1Claims
0Family size
Inventors
Key dates
| Filing date | Feb 23, 1989 |
| Grant date | Oct 8, 1991 |
| Priority date | — |
| Expiry date | Oct 8, 2005 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.