EXTENSION CASES BEFORE CONGRESS. Under the new Patent Act passed July 8 1870 power is vested in the Commissioner to extend any patent granted prior to March 2 1861 for the term of seven years from the expiration of the original term but no patent granted since the above date can be extended. The Commissioner how ever has no power to renew a patent after it has once ex pired neither is provision made for an appeal from his decis ion in extension cases. Hence disappointed applicants in these cases have occasionally carried them before Congress under the form of petitions for relief and as that body has shown a disposition to give them a favorable consideration the number of applicants has of late increased. The present Congress has received many applications of this class of which the following is a list the first one mentioned being one of the most important and meritorious as will appear from the following brief statement : The case is that of A. Smith and H. Skinner of Yonkers N. Y. for an extension of their patent of November 4 1856 for a carpet weaving loom. The object of the invention is to produce by machinery an Axminster or tufted carpet a fabric of which the distinctive features in the manufacture namely the insertion and binding of the tufts had heretofore depen ded on hand skill a weaver working only two yards a day. With this loom the devices of which are necessarily very complex yet very admirable as specimens of mechanical ac tion and effect the manufacturer can produce from seventeen to twenty yards per day. Owing to losses by fire and the delays incident to the perfecting of some parts of the mechan ism it was not until the fall of 1868 that the inventors put their carpet on the market. The article was so well received that the company erected a large factory and in 1870 had thirty looms-in operation. A. T. Stewart & Co. early became dealers in this important article of American manufacture. The application for extension was refused by Commissioner Fi
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