Container with refillable core
US6668579B1 · kind B1 · utility
8Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2002 |
| Grant date | Dec 30, 2003 |
| Priority date | — |
| Expiry date | Jun 6, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF25D2331/804
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A doubled wall container is disclosed having a fill cap that allows a user to alternately add or remove a liquid from an interior volume formed between the walls of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.