Granted Patent
Utility
US 5,925,898 · App. 09/013,292
Optoelectronic transducer and production methods
Inventor:
Werner Spath
Patented Case
View Patent ↗
Granted: Jul 20, 1999
Filed: Jan 26, 1998
Inventor
Werner Spath
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.