Granted Patent
Utility
US 5,875,549 · App. 08/819,381
Method of forming internal passages within articles and articles formed by same
Inventor:
Barry L. McKinley
Patented Case
View Patent ↗
Granted: Mar 2, 1999
Filed: Mar 17, 1997
Inventor
Barry L. McKinley
Assignee (at issue)
Siemens Westinghouse Power Corporation
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.