Granted Patent
Utility
US 5,714,080 · App. 08/435,885
Self-actuating molds for vertically casting concrete pipe
Inventors:
Ming-Che Kuo, Paul Kubat
Patented Case
View Patent ↗
Granted: Feb 3, 1998
Filed: May 5, 1995
Inventors
Ming-Che Kuo
Paul Kubat
Assignee (at issue)
AMERON INTERNATIONAL CORPORATION
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.