Granted Patent
Utility
US 5,171,023 · App. 07/657,432
Technique for in-place cleaning of a sealing structure
Inventors:
Robert J. Scott, Robert Anderson Reynolds, III, Michael B. Comer, John T. Mabon
Patented Case
View Patent ↗
Granted: Dec 15, 1992
Filed: Feb 19, 1991
Inventors
Robert J. Scott
Robert Anderson Reynolds, III
Michael B. Comer
John T. Mabon
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.