Granted Patent
Utility
US 6,087,906 · App. 09/099,016
Absorbent amplitude filter
Inventor:
Peter Lampel
Patented Case
View Patent ↗
Granted: Jul 11, 2000
Filed: Jun 17, 1998
Inventor
Peter Lampel
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.