TAILIEUCHUNG - Five Hundred and Seven Mechanical Movements Episode 14

Tham khảo tài liệu 'five hundred and seven mechanical movements episode 14', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | EXTENSIONS OF PATENTS. Inventors of new and useful discoveries or improvements patented in 1854 or at any subsequent period prior to March 2 tS6i or their heirs will do well to observe that by the law of the United States patents granted within the periods here staled nay upon proper grounds be extended for a period of seven years in fa or of the inventor or his heirs the prohibition as to extension only applying to patents issued since March 2 1S61. The novelty at the time of the patent having been granted and .he utility and value and importance of the invention to the public being proved to obtain an extension for a period of seven years t is only necessary for the inventor or his heirs to show that having used diligence and without fault on his or their part an adequate remuneration has not been received. The mere fact of an inventor having sold his patent or parted with his right for an Inadequate amount so that he has been excluded from making the invention profitable to himself however well it may have paid others doos not debar him from obtaining an extension. In 1854 nearly 2 000 patents were issued say 1 800 for new and useful Tiechnn cal inventions any or all of which are or were open to extension provided reasonable grounds for the same as already mentioned can or could be shown. With many of these however it is now too late as all of said patents expire during the current year and the law requires that the petition for extension should be filed at least ninety days before the expiration of the patent such cases should in fact be put in competent hands to prosecute some four to six months in advance thereof. Many of these patents are extremely valuable on account of the original ground they cover occasionally making more recent patents subsidiary to them and holders of patents issued in 1S54-55 ought now to be making their necessary arrangements for extension. F5R0WN Coombs Co. Solicitors of Patents 1S9 Broadway New York are always ready to give advice

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