Respirator
US4155358A · kind A · utility
50Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1976 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | Dec 13, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/196666
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A disposable valveless chemical cartridge respirator for filtration of vinyl chloride monomer having an end of service life indicator is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.