CHAPTER III. PATENTS THE GREATEST SOURCE OF WEALTH CHAPTER IV. SUCCESSFUL INVENTORS CHAPTER VI. GROWTH OF THE FIELD OF INVENTION CHAPTER VIII. SOUNDING THE MARKET CHAPTER IX. PRACTICAL DEVELOPMENT CHAPTER X. LOWER COST SUPERIOR MERIT CHAPTER XI. APPLICATION FOR PATENTS, DESIGN PATENTS, TRADE-MARKS LABELS AND COPYRIGHTS CHAPTER XIII. DISCOURAGEMENTS AND DANGERS HOW TO SUCCEED |