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http://www.google.com/patents/US821393 http://www.google.com/patents/US821393 The OCR made lots of mistakes
by xiphias 11y ago
http://www.google.com/patents/US821393 http://www.google.com/patents/US821393
The OCR made lots of mistakes
- xiphias 11y agohttps://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US821393.pdf https://docs.google.com/viewer?url=patentimages.storage.goog...