Combination lift insert and weld plate for use in hollow core concrete planks
USD272517S · kind S · design
26Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 1981 |
| Grant date | Feb 7, 1984 |
| Priority date | — |
| Expiry date | Feb 7, 1998 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.