Combined signal transmission device and detonating cord for blasting assembly
USD301599S · kind S · design
1Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 27, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Jun 13, 2003 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.