Hearing-protector plug
US5557077A · kind A · utility
5Cited by
7References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 5, 1993 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Oct 5, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B90/39
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Hearing-protector plug made of plug material in which there is distributed a detectable material in powder form, particularly iron powder. If lost, such as in the food industry, the plug can be traced with the aid of detection equipment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.