Granted Patent
Utility
US 6,532,100 · App. 09/368,342
Extended lifetime frequency conversion crystals
Inventors:
Jouni P. Partanen, Xingkun Wu, Gary Reynolds, William F. Hug
Patented Case
View Patent ↗
Granted: Mar 11, 2003
Filed: Aug 4, 1999
Inventors
Jouni P. Partanen
Xingkun Wu
Gary Reynolds
William F. Hug
Assignee (at issue)
3D Systems, Inc.
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.