Granted Patent
Utility
US 4,938,046 · App. 07/353,438
Spring forming machine with conveying device
Inventors:
Ryozou Kodama, Minoru Yoshida
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: May 18, 1989
Inventors
Ryozou Kodama
Minoru Yoshida
Assignee (at issue)
Sanko Senzai Kogyo Kabushiki Kaisha
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.