Granted Patent
Utility
US 5,454,250 · App. 08/168,997
Method for controlling die-retaining force of extruder
Inventors:
Fumio Ikeda, Akira Funai, Tatsuyoshi Miyazaki
Patented Case
View Patent ↗
Granted: Oct 3, 1995
Filed: Dec 20, 1993
Inventors
Fumio Ikeda
Akira Funai
Tatsuyoshi Miyazaki
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.