Granted Patent
Utility
US 6,379,208 · App. 09/515,230
Personal flotation device with adjusting flotation layers
Inventor:
Alexander Khanamirian
Patented Case
View Patent ↗
Granted: Apr 30, 2002
Filed: Feb 29, 2000
Inventor
Alexander Khanamirian
Assignee (at issue)
Extrasport, Inc.
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.