Signal transmission device for blasting assembly
USD293928S · kind S · design
1Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1984 |
| Grant date | Jan 26, 1988 |
| Priority date | — |
| Expiry date | Jan 26, 2002 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.