Granted Patent
Utility
US 6,012,003 · App. 09/172,846
Method for determining the positions of a plurality of anonymous fixed reference objects for mobile surface transportation and a device for determining said positions
Inventor:
Karl Åström
Patented Case
View Patent ↗
Granted: Jan 4, 2000
Filed: Oct 15, 1998
Inventor
Karl Åström
Assignee (at issue)
Apogeum AB
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.