Franking machine
US5307280A · kind A · utility
4Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1991 |
| Grant date | Apr 26, 1994 |
| Priority date | — |
| Expiry date | Sep 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00548
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A franking machine comprises, in addition to a main memory, a backup memory which receives the content of the main memory upon opening the casing or a casing cover of the franking machine. After closing the casing or casing cover, the memory contents are returned to the main memory from the backup memory. The interchange of memory contents is initiated by a signal from an electric switch located on the casing. The backup memory ensures that it is not possible to falsity the value amount settlement with the Post Office as a result of servicing or tampering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.