Granted Patent
Utility
US 6,791,465 · App. 09/903,844
Tamper indicating bolt
Inventors:
Sergei V. Blagin, Boris P. Barkanov
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Jul 11, 2001
Inventors
Sergei V. Blagin
Boris P. Barkanov
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.