Granted Patent
Utility
US 6,411,081 · App. 09/499,523
Linear position sensor using magnetic fields
Inventor:
Charles Spellman
Patented Case
View Patent ↗
Granted: Jun 25, 2002
Filed: Feb 10, 2000
Inventor
Charles Spellman
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.