Granted Patent
Utility
US 4,704,886 · App. 06/725,897
Stretch-forming process
Inventors:
Robert P. Evert, James A. Miller
Patented Case
View Patent ↗
Granted: Nov 10, 1987
Filed: Apr 22, 1985
Inventors
Robert P. Evert
James A. Miller
Assignee (at issue)
Aluminum Company of America
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.