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–90– -90sive ownership therein, and in the representation or expression thereof, which continues so long as the invention or design and the representations or expressions thereof made by him remain in his possession. § 442. Joint ownership Unless otherwise agreed, a composition in letters or art, or an invention or design, in the production of which several persons are jointly concerned, is owned by them as follows: (1) in equal proportions, if the composition in letters or art is indivisible or the invention or design is single; or (2) in proportion to the contribution of each, if the composition in letters or art is divisible or the invention or design is not single. § 443. Transfer of ownership The owner of a right in a composition in letters or art, or of an invention or design, or of a representation or expression thereof, may transfer his ownership or property therein. § 444. E£Fect of publication or making public Subject to the law of copyright, if the owner of a composition in letters or art publishes it, or the owner of an invention or design intentionally makes it public, any person, without responsibility to the owner, may use the composition in any manner or make public a copy or reproduction of the invention or design. § 445. Subsequent and original inventors If the owner of an invention or design, does not make it public, any other person subsequently and originally producing the same thing has the same right therein as the prior inventor, which is exclusive to the same extent against all persons except the prior inventor, or those claiming under him. § 446. Private writings Letters and other private communications in writing belong to the person to whom they are addressed and delivered; but, except by authority of law, they may not be published against the will of the writer. Subchapter IV—Patents, Trademarks and Copyrights § 471. Laws extended to the Canal Zone The patent, trademark, and copyright laws of the United States have the same force and effect in the Canal Zone as in the continental United States, and the district court has the same jurisdiction in actions arising under those laws as is exercised by the United States district courts.

CHAPTER 21—MODES OF ACQUIRING PROPERTY Bee. 501. Modes of acquisition generally.

§ 501. Modes of acquisition generally Property is acquired by: (1) accession; (2) transfer; (3) will; or (4) succession.

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