Granted Patent
Utility
US 4,568,501 · App. 06/597,309
Method and apparatus with automatic feed means for centrifugally casting articles
Inventors:
Otto Wichterle, Jiri Vodnansky, Vladimir Havlin
Patented Case
View Patent ↗
Granted: Feb 4, 1986
Filed: Apr 6, 1984
Inventors
Otto Wichterle
Jiri Vodnansky
Vladimir Havlin
Assignee (at issue)
Ceskoslovenska akademie ved
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.