Granted Patent
Utility
US 3,933,180 · App. 05/408,339
Methods and apparatus for making fiber reinforced plastic pipe
Inventor:
J. Warne Carter, Sr.
Patented Case
View Patent ↗
Granted: Jan 20, 1976
Filed: Oct 23, 1973
Inventor
J. Warne Carter, Sr.
Assignee (at issue)
Ciba-Geigy
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.