Granted Patent
Utility
US 5,909,765 · App. 08/953,890
Method of producing investment castings for stereolithography patterns
Inventor:
Christopher S. McDowell
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Oct 20, 1997
Inventor
Christopher S. McDowell
Assignee (at issue)
Johnson & Johnson Professional, 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.