Granted Patent
Utility
US 5,924,320 · App. 08/883,088
Device for unfolding a shaped metal article and a method for unfolding the same
Inventors:
Hirozo Michisaka, Saburo Washo, Yasuo Iisaka, Kenzo Shitashimizu
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Jun 26, 1997
Inventors
Hirozo Michisaka
Saburo Washo
Yasuo Iisaka
Kenzo Shitashimizu
Assignee (at issue)
Showa Aluminum Corp.
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.