Granted Patent
Utility
US 5,803,021 · App. 08/320,346
Boiler access door construction
Inventors:
Carol A. Rourke, John W. Shelton, Morgan L. Wilt
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Oct 11, 1994
Inventors
Carol A. Rourke
John W. Shelton
Morgan L. Wilt
Assignee (at issue)
Combustion Engineering, 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.