Granted Patent
Utility
US 6,201,478 · App. 09/321,672
Scuba air device computer
Inventor:
Michael Hollis
Patented Case
View Patent ↗
Granted: Mar 13, 2001
Filed: May 28, 1999
Inventor
Michael Hollis
Assignee (at issue)
American Underwater Products
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.