Time accounting system, in particular for parking subject to charge
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 26, 1991
Grant Date -
N/A
app pub date -
Feb 23, 1989
filing date -
May 14, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A time accounting system for accounting parking subject to charge periods which includes a card having an electronic memory in which each memory location can be individually and irreversibly written in order to represent a time unit credit allocated to the holder of the card. The system also includes a portable case in which the card can be inserted and which has an internal clock circuit and a coupling circuit, as well as a writing circuit. The case is designed with means for temporary storage of a time unit credit which is activable if the time credit remaining in the inserted card is less than the parking time of the holder.
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Family
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