Granted Patent
Utility
US 5,084,061 · App. 07/394,545
Intragastric balloon with improved valve locating means
Inventors:
Fred C. Gau, John C. Hancock
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Aug 16, 1989
Inventors
Fred C. Gau
John C. Hancock
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.