Packets
US3948389A · kind A · utility
23Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1974 |
| Grant date | Apr 6, 1976 |
| Priority date | — |
| Expiry date | Apr 22, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D85/1018
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A cigarette packet is closed at one end by an air impervious tube which is sealed flat, the resulting margin and triangulated ends being folded against the packet. In one packet the tube extends to both ends of the packet, which are sealed in the same manner; in a second packet the middle part of the tube is omitted and replaced by a tubular body of card and aluminium foil; and in a third packet one end is closed by a foil cap. The packets described may be used inside a conventional hinged lid packet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.