Knob face plate for a door knob
USD246890S · kind S · design
9Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Jan 10, 1992 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.