Granted Patent
Utility
US 6,033,562 · App. 09/141,977
Apparatus for aerating wastewater from pressurized or gravity flow sources
Inventor:
Donald Arthur Budeit
Patented Case
View Patent ↗
Granted: Mar 7, 2000
Filed: Aug 28, 1998
Inventor
Donald Arthur Budeit
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.