Latent fingerprint detection
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United States of America Patent
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-
Apr 7, 1981
Grant Date -
N/A
app pub date -
Jan 2, 1979
filing date -
Jan 2, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Latent fingerprints can be detected and visualized by application to the suspected locale, of a solution, in a volatile organic solvent of selected silver salts soluble in said solvent. Suitable salts include silver perchlorate and silver trifluoroacetate. The solution is preferably applied as a spray. This non-aqueous solution minimizes smudging, 'running', warping and other damage to water-sensitive material (usually inks, dyes and/or cellulosic substrates).
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