Chapter 67. To amend section 4900 of the United States Revised Statutes
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CHAP. 67.— An Act To amend section 4900 of the United States Revised Statutes.February 7, 1927.[[H. R. 7563](/us/bill/69/hr/7563).][[Public, No. 580](/us/pl/69/580).] *Be it enacted by the Senate and House of Representatives of the United States of America in Congress assembled*,Patents.[R. S., sec. 4900, p. 948, amended](/us/rs/s4900/p948). That section 4900 of the Revised Statutes of the United States shall be amended to read as follows: " Marking articles with “patent” and number thereof, required.“It shall be the duty of ail patentees and their assigns and legal representatives, and of all persons making or vending any patented article for or under them, to give sufficient notice to the public that the same is patented: either by fixing thereon the word ‘patent,’ together with the number of the patent, or when, from the character of the article, this can not be done, by fixing to it, or to the package wherein one or more of them is inclosed, a label containing the like notice: *Provided, however*, That with respect to any patent *Proviso*.Issued prior to April 1, 1927, may have “Patented” and date of issue.No suit for infringement unless so marked.issued prior to April 1, 1927, it shall be sufficient to give such notice in the form following, viz: ‘Patented,’ together with the day and year the patent was granted; and in any suit for infringement by the party failing so to mark, no damages shall be recovered by the 1059 plaintiff, except on proof that the defendant was duly notified of the infringement and continued, after such notice, to make, use, or vend the article so patented.
” " Approved, February 7, 1927.