Granted Patent
Utility
US 6,730,258 · App. 08/326,806
Method of manufacturing windows having an integral hollow body frame member
Inventors:
Shinichi Ohtake, Tatsuya Tamura
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Oct 19, 1994
Inventors
Shinichi Ohtake
Tatsuya Tamura
Assignee (at issue)
Hashimoto Forming Industry Company Limited
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.