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 Rh parts of instruments serving to reproduce the same mechanically, the act requires that he shall serve notice of such intention upon the copyright proprietor and must also send a duplicate of such notice to the Copyright Office.

46. Application for the renewal or extension of a subsisting copyright (except copyright of a composite work) may be filed within one year prior to the expiration of the existing term by:

(1) The author of the work if still living;

(2) The widow, widower, or children of the author if the author is not living.

(3) The author's executor, if such author, widow, widower, or children be not living;

(4) If the author, widow, widower, and children are all dead, and the author left no will, then the next of kin.

47. If the work be a composite work upon which copyright was originally secured by the proprietor thereof, then composite such proprietor is entitled to the privilege of renewal and extension.

48. The fee for the recording of the renewal claim is 50 cents. Application for the renewal or extension of copyright can not be recorded in the name of an assignee nor in that of any person not expressly mentioned in section 24 of the act.

49. Upon application to the Register of Copyrights search of the records, indexes, or deposits will be made for such information as they may contain relative to copyright claims. Persons desiring searches to be made should state clearly the nature of the work, its title, the name of the claimant of copyright and probable date of entry; in the case of an assignment, the name of the assignor or as-