Granted Patent
Utility
US 5,414,887 · App. 07/923,242
Apparatus for cleaning air ports of a chemical recovery furnace
Inventors:
Clayton J. Abel, Daniel R. Higgins, Kenneth A. Pingel
Patented Case
View Patent ↗
Granted: May 16, 1995
Filed: Jul 31, 1992
Inventors
Clayton J. Abel
Daniel R. Higgins
Kenneth A. Pingel
Assignee (at issue)
Anthony-Ross 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.