Granted Patent
Utility
US 6,461,799 · App. 09/863,954
Method for producing plano-convex convergence lenses
Inventors:
Hans-Ludwig Althaus, Gerhard Kuhn
Patented Case
View Patent ↗
Granted: Oct 8, 2002
Filed: May 23, 2001
Inventors
Hans-Ludwig Althaus
Gerhard Kuhn
Assignee (at issue)
Siemens Aktiengesellschaft
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.