The old adage, "Be sure you are right and then go ahead," is especially apropos advice to inventors. But how can you be SURE you are right? Only by investigation that is strictly impersonal and unprejudiced in every sense. You can have this work of investigation done for you—you can buy advice of this kind just as you can buy legal or medical advice from specialists. Better disburse $25 or $50 in procuring sound expert advice than spend weeks, months and years chasing a mirage or will-o'-wisp. You are not compelled to accept the advice if it differs from your ideas, but you will most likely learn a great deal that will pay you handsomely.

The writer is fully aware that this line of talk is opposed to the "don't hesitate," "send at once," "delays are dangerous," "the other fellow will get ahead of you" arguments so generally used by individuals who "have an axe to grind." BE SURE you are right, and then go ahead—don't THINK you are sure—BE SURE!

The author feels that a careful weighing of all statements and facts in this volume will be of great value to anyone considering the application for a patent. History has undoubtedly proven that good patents are possibly more profitable than any other investment that can be made. If you have an idea, or have made a discovery that you think will prove of benefit to mankind, the wise and prudent course is to have it thoroughly investigated, in all points as relate to its success. The small cost of a reliable investigation would be money well spent as it is possible your idea or discovery may be the means of bringing you in enormous wealth.