Granted Patent
Utility
US 5,252,056 · App. 07/926,560
Contact lens casting mould
Inventors:
Wilhelm Hörner, Peter Hofer, Peter Hagmann
Patented Case
View Patent ↗
Granted: Oct 12, 1993
Filed: Aug 6, 1992
Inventors
Wilhelm Hörner
Peter Hofer
Peter Hagmann
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.