Granted Patent
Utility
US 6,428,708 · App. 09/520,235
Filter apparatus and method
Inventors:
Peter Halemba, Stuart Park
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Mar 7, 2000
Inventors
Peter Halemba
Stuart Park
Assignee (at issue)
KINETICO INCORPORATED
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.