Smoke detecting photoelectric sensing chamber
USD277558S · kind S · design
9Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 24, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Feb 12, 1999 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.