Wear point for agricultural fertilizer shank
USD252506S · kind S · design
1Cited by
4References
1Claims
0Family size
Inventor
Key dates
| Filing date | Feb 28, 1977 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Jul 31, 1993 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.