Granted Patent
Utility
US 4,596,099 · App. 06/604,170
Heat-insulating frame assembly for use in curtain wall construction
Inventor:
Hiromitsu Kaminaga
Patented Case
View Patent ↗
Granted: Jun 24, 1986
Filed: Apr 26, 1984
Inventor
Hiromitsu Kaminaga
Assignee (at issue)
Yoshida Kogyo K.K.
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.