Granted Patent
Utility
US 4,909,820 · App. 07/314,922
Method of and an apparatus for bending glass plates for a laminated glass
Inventors:
Takashi Hirotsu, Yukiyasu Mori, Hiroshi Tsuji, Tatsuo Sugiyama, Yoshihiro Watanabe
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Feb 24, 1989
Inventors
Takashi Hirotsu
Yukiyasu Mori
Hiroshi Tsuji
Tatsuo Sugiyama
Yoshihiro Watanabe
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.