2. - §1, Of the persons who may obtain patents. Prussian citizens or subjects are alone entitled to a patent. Foreigners can not obtain one.
3. - §2. Nature of the patents. Patents are granted in Prussia for an invention when the thing has been discovered or invented by the applicant. For an improvement, when considerable improvement has been made to a thing before known. And for importation, when the thing has been brought from a foreign country and put in use in the kingdom. Patents may extend over the whole country or only over a particular part.
4. - §3. Duration of patents. The patent may at the choice of the applicant, be for any period not less than six months nor more than fifteen years.