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FORTUNES IN PATENTS Tells How to Invent for Profit and gives history of suc cessful inventions . WHAT TO INVENT Contains a valuable list of Inventions Wanted and suggestions concerning profitable fields of invention .
FORTUNES IN PATENTS Tells How to Invent for Profit and gives history of suc cessful inventions . WHAT TO INVENT Contains a valuable list of Inventions Wanted and suggestions concerning profitable fields of invention .
Page 164
FORTUNES IN PATENTS Tells How to Invent for Profit and gives history of successful inventions . WHAT TO INVENT Contains a valuable list of Inventions Wanted and suggestions concerning profitable fields of invention .
FORTUNES IN PATENTS Tells How to Invent for Profit and gives history of successful inventions . WHAT TO INVENT Contains a valuable list of Inventions Wanted and suggestions concerning profitable fields of invention .
Page 373
The invention has a great field of usefulness in surgery and certain industries . Surgeons depend upon the color of the tissues to tell whether they are diseased or not . A great deal of surgery is done at night .
The invention has a great field of usefulness in surgery and certain industries . Surgeons depend upon the color of the tissues to tell whether they are diseased or not . A great deal of surgery is done at night .
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