The OCR that Google Patents originates has been edited to make this patent

full-text-searchable and easy to read.

There are 3 formats available: .pdf (original), .txt (clean text), and .brf (braille file).

See the "all files HTTP" link to access all three; also go there to read the .txt file if

the "full text" link gives trouble.

During the editing process, a diligent attempt has been made to correctly discern every

reference character, date, measurement, etc. set forth in the patent, and the majority by

far are correct. However, because the OCR process is not entirely accurate and because

inference is difficult at times, there may be some that are inconsistent or incorrect.

In the .txt and .brf formats of this patent, a stand-alone or punctuated dash denotes a word

or phrase that could not be deciphered. .

These documents are all in the public domain.

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