Granted Patent
Utility
US 4,497,103 · App. 06/376,783
Method for manufacturing a heat insulation sash bar
Inventors:
Shuuichi Hosooka, Tetsuji Imai, Haruo Hori
Patented Case
View Patent ↗
Granted: Feb 5, 1985
Filed: May 10, 1982
Inventors
Shuuichi Hosooka
Tetsuji Imai
Haruo Hori
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.