Dental root-canal broach
USD250544S · kind S · design
26Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1977 |
| Grant date | Dec 12, 1978 |
| Priority date | — |
| Expiry date | Dec 12, 1992 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.