Granted Patent
Utility
US 4,624,199 · App. 06/827,096
Apparatus for preventing fall of button parts from a chute
Inventor:
Keiichi Yoshieda
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Feb 7, 1986
Inventor
Keiichi Yoshieda
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.