Granted Patent
Utility
US 5,298,204 · App. 07/834,760
Method of burning out polycarbonate patterns from ceramic molds
Inventors:
Kurt F. O'Connor, James R. Stewart
Patented Case
View Patent ↗
Granted: Mar 29, 1994
Filed: Feb 12, 1992
Inventors
Kurt F. O'Connor
James R. Stewart
Assignee (at issue)
General Motors LLC
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.