Electroluminescent lamp with registration index feature and method of making the same
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United States of America Patent
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Dec 10, 1996
Grant Date -
N/A
app pub date -
May 23, 1995
filing date -
May 23, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electroluminescent lamp having an indexing indicium, e.g., a registration mark, located within the lit surface area of the lamp, with the registration mark preferably being transparent to the illumination generated by the lamp when the lamp is lit in use, but being readily detected when selectively activated for providing an alignment point or region on the lamp, such as by activation with ultraviolet light of specific frequency/wavelength characteristics, when the registration mark is formed by deposition on the lamp lit surface of a dot or blob of a composition containing an ultraviolet radiation-fluorescent printing ink.
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