Welding helmets with auxiliary optical vision systems
US4523808A · kind A · utility
23Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1983 |
| Grant date | Jun 18, 1985 |
| Priority date | — |
| Expiry date | Jul 12, 2003 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F9/064
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A welding helmet with welder's glass includes one or more reducing auxiliary vision systems providing viewing of areas which would otherwise be blocked by opaque portions of the welding helmet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.