Franking machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 26, 1994
Grant Date -
N/A
app pub date -
Sep 3, 1991
filing date -
Jul 21, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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