Hand held electronic postage meter having secure postage meter doors
US4506344A · kind A · utility
30Cited by
14References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 4, 1982 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Jun 4, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00935
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A pair of tamper proof postage meter doors which remain closed and locked until the proper combination of numbers is entered using the normal postage keyboard. The doors will not function if there is insufficient postage in the accounting registers. Means are also provided which will cause the ascending and descending registers in the postage meter to indicate zero postage remaining in the meter if an attempt is made to tamper with or force open the doors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.