Data card
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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May 13, 1980
Grant Date -
N/A
app pub date -
Sep 26, 1977
filing date -
Sep 26, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A data card wherein various data are recorded with a fluorescent material which emits infrared rays when excited by infrared rays is disclosed. The data card according to this invention has such merit that it is very effective for the preservation of secrecy and the prevention of forgery, that it is not affected by stains, that different information can be recorded thereon one over the other, and that it can be read by an extraordinarily compact reader.
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