Security drain plug for armor and the like
US5058858A · kind A · utility
2Cited by
3References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1991 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Jan 3, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/11
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drain plug is disclosed for use with hollow structures which prevents the nsertion of an external probe into the structure internal cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.