Granted Patent
Utility
US 5,542,984 · App. 08/438,758
Method for dispersion of sludge and for preparing a circulator for dispersing sludge
Inventor:
Richard W. Krajicek
Patented Case
View Patent ↗
Granted: Aug 6, 1996
Filed: May 10, 1995
Inventor
Richard W. Krajicek
Assignee (at issue)
Servi-Tech, 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.