Granted Patent
Utility
US 4,569,218 · App. 06/512,922
Apparatus and process for producing shaped metal parts
Inventors:
Robert L. Baker, Lester P. Chin, James A. Courtois, Lawrence J. Pionke, Ralph M. Sharp, Peter Willcox
Patented Case
View Patent ↗
Granted: Feb 11, 1986
Filed: Jul 12, 1983
Inventors
Robert L. Baker
Lester P. Chin
James A. Courtois
Lawrence J. Pionke
Ralph M. Sharp
Peter Willcox
Assignee (at issue)
Alumax 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.