To Correspondents. Patent Agents—A Caution. Low Pressure Engines on the Western W aters. Ericsson on the 'Ericsson. Propellers. Con iiii issioners to the New York CrIstal Palace. Management of the Patent Office. ment. It was organized for the purpose of useful arts and to protect the peculiar rights of inventors a class of men who have done more for the advancement of civilization and the honor and greatness of our country than all the political economists that have ever lived. The steam engine the cotton gin the spinning jenny the power loom the telegraph the sewing machine and all other


To Correspondents. Patent Agents—A Caution. Low Pressure Engines on the Western W aters. Ericsson on the 'Ericsson. Propellers. Con iiii issioners to the New York CrIstal Palace. Management of the Patent Office. ment. It was organized for the purpose of useful arts and to protect the peculiar rights of inventors a class of men who have done more for the advancement of civilization and the honor and greatness of our country than all the political economists that have ever lived. The steam engine the cotton gin the spinning jenny the power loom the telegraph the sewing machine and all other useful inven convince without arguing and subdue all op position by the eloquence of action. The tration of the laws which regulate the issue of patents—is therefore of great consequence not only to inventors but the whole people. head should be acqaainted with the laws of patents a man of good judgment of scientific ability candor and impartiality. The exa cles in their several departments patient in investigation industrious sensible generous and impaitial so that no injustice should be done by them to any applicant for a patent. Good men although liable to make mistakes (for none are perfect) are always willing to rectify the same when they are pointed out ; while bad men under the best laws cannot he trusted in any capacity. The present Commissioner of Patents Judge Mason—has given evidence since he entered upon the duties of his office of great ability and uprightness. He has changed the policy which was pursued by the Patent Of fice for a short time and which we con all the fee for rejected applications on which caveats had been filed. According to the hereafter be returned on all withdrawals ; and we have no doubt but every useful reform which Judge Mason in his wisdom deems ne proper time and in the proper manner., scientific american, 1853-06-18


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