This patent was taken from the Google Patents database. The OCR that Google originates has been edited.
There are 3 formats used here: .pdf (original), .txt (clean text), and .brf (braille file). .brf is a file format used by the blind. See the "all files HTTP" link to access all three.
A diligent attempt has been made to correctly discern every reference character set forth in the patent, and the majority by far are correct. However, because the OCR process is not entirely accurate, there may be some reference characters that are inconsistent or incorrect.