Granted Patent
Utility
US 4,625,482 · App. 06/519,187
Unit type curtain wall
Inventor:
Hiromitsu Kaminaga
Patented Case
View Patent ↗
Granted: Dec 2, 1986
Filed: Aug 1, 1983
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.