Granted Patent
Utility
US 5,984,992 · App. 08/852,663
Sewage sludge recycling with a pipe cross-reactor
Inventors:
Gary D. Greer, Gary L. Dahms
Patented Case
View Patent ↗
Granted: Nov 16, 1999
Filed: May 7, 1997
Inventors
Gary D. Greer
Gary L. Dahms
Assignee (at issue)
UNITY CORPORATION, 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.