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Austrian tariff of import duties upon the principal articles of British produce and manufactures : arranged in groups, in accordance with the classification of the objects contributed to the Vienna Universal Exhibiton of 1873; with alphabetical index, a comparative table of Austrian, English and French money, weights, and measures, the Anglo-Austrian treaty of commerce, the Austrian patent laws, and other official documents of importance ; Vienna Universal Exhibition, 1873 / prepared by Her Majesty's commissioners, for the guidance of British exhibitors
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or improvement was introdueed from abroad, and the inland patent thereof not granted to the owner of the previously obtained foreign patent for the same article, or to his legal assignee (§ 3).

cc. If the owner of a patent in force shows that the discovery, invention, or improvement patented at a later period is identical with his own discovery, invention, or improve­ment previously announced and patented in conformity with the rules.

b. If an obligation which the validity of the patent requires is not

fulfilled.

c. If it is objectionable on public grounds (§ 19).

2. By expiry. This occurs—

a. When the patentee has not commenced to make use of his discovery,

invention, or improvement at home within one year from the day

of issue of the deed of patent, at latest; or if he has entirely ' discontinued the use of it at home for two entire years. Further:

b. When the original or subsequently prolonged duration of the patent

has ceased.

c. When the patent is voluntarily laid aside.

It is, of course, understood that these means by which a patent may become void, or expire, apply to every one who subsequently acquires a patent, us well as to the original patentee.

§30.

Public use of patent. As soon as a patent has become void the use of the discovery, invention, or

improvement in question is allowed generally, subject to the observance of the existing trade laws and other ordinances thereto referring.

Section V.

Of the Registration of Patents and the Custody of the Specifications.

§ 31.

Registration of patent. Every patent, as soon as granted, is entered in a register at the Ministry of Trade and Commerce.

If the patent is used in the style of a firm, differing from the real name of the owner of the patent, the name of the firm will also be registered.

The specifications, drawings, models, &c. belonging to the patent will be pre­served in a separate archive at the Ministry of Commerce. Every alteration occurring in the existence of a patent is noted in the above register.

§32.

SnbfSenandwhere Evei T one is allowed to obtain verbal or written information about patents

obtained. granted at the Office of Patents, and even personally inspect the register for this

purpose. In like manner every one may look at the descriptions, together witli appendices in custody there, the secrecy of which was not applied for, or which relate to patents no longer valid. Finally, he can take copies, or have copies taken from the register, at his own expense, of certain portions of such patents, or of

 
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