Granted Patent
Utility
US 5,489,409 · App. 08/264,947
Method of making a window frame and a window panel with a window frame
Inventors:
Kouji Koganezawa, Noriyuki Yoshihara, Masaki Tsujino
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Jun 24, 1994
Inventors
Kouji Koganezawa
Noriyuki Yoshihara
Masaki Tsujino
Assignee (at issue)
ASAHI GLASS CO., LTD.
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.