Granted Patent
Utility
US 5,628,261 · App. 08/406,558
Method and furnace for decomposing solid waste materials
Inventors:
Richard D. Beckstead, Ascencion G. Vera, Russell S. Curtis, George Brown, Kirk Matthews, C. Steven Lekowski
Patented Case
View Patent ↗
Granted: May 13, 1997
Filed: Mar 20, 1995
Inventors
Richard D. Beckstead
Ascencion G. Vera
Russell S. Curtis
George Brown
Kirk Matthews
C. Steven Lekowski
Assignee (at issue)
Chemical Lime Company
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.