Granted Patent
Utility
US 5,340,778 · App. 08/071,636
Optical crown glass having negative anomalous partial dispersion and high UV transmission
Inventors:
Thomas Kloss, Elfi Stein, Kirsten Gerth, Andrea Wickardt
Patented Case
View Patent ↗
Granted: Aug 23, 1994
Filed: Jun 4, 1993
Inventors
Thomas Kloss
Elfi Stein
Kirsten Gerth
Andrea Wickardt
Assignee (at issue)
Scott Glaswerke
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.