Granted Patent
Utility
US 6,835,409 · App. 10/473,652
Method of recording fingerprints on a recording surface having a thermosenstivive color developing layer thereon
Inventor:
Douglas C. Arndt
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Oct 2, 2003
Inventor
Douglas C. Arndt
Assignee (at issue)
Armor Holdings Forensics LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.