Internal filter
US6840042B1 · kind B1 · utility
5Cited by
19References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 2003 |
| Grant date | Jan 11, 2005 |
| Priority date | — |
| Expiry date | Jul 18, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2011/0029
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An internal filter that may be installed or removed from the outside of the housing. The internal filter may also cooperate with an inlet passage for a charge pump.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.