 | Joseph Chitty - 1820 - 528 str.
...universally requires, as a condition on which the validity of the grant depends, that the patentee shall " particularly describe and ascertain the nature of the invention, and in what manner the same is to be performed, by an instrument in writing under his hand and seal ; and cause the same to be... | |
 | 1771 - 568 str.
...the inventor thereof, or If the Specification filed or the amended specification (if any) does not particularly describe and ascertain the nature of the invention, and in what manner the same is to be performed, or If the original or any subsequent petition relating to the invention or the... | |
 | 1825 - 590 str.
...enrolled within two months or such other time as shall be specified by the patent. " This instrument must particularly describe and ascertain the nature of the invention, and in what manner it is to be performed." G If this description be false it is clearly void.* Even if it is unnecessarily... | |
 | 1825 - 1070 str.
...enrolled within two months or such other time as shall be specified by the patent. " This instrument must particularly describe and ascertain the nature of the invention, and in what manner it is to be performed." G If this description be false it is clearly void.* Even if it is unnecessarily... | |
 | Samuel Bealey Harrison, Frederic Edwards - 1838 - 908 str.
...stating the particular subject of the grant, and contain a proviso that if the patentee should not particularly describe and ascertain the nature of the invention, and in what manner the same is to be performed, by an instrument in writing, to be inrolled in Chancery (i) within one month (/)... | |
 | Great Britain. Court of Common Pleas, James Manning, Thomas Colpitts Granger - 1841 - 1068 str.
...void; replication. Fifthly — That the plaintiff did not, in and by the supposed instrument in writing so set out as aforesaid* particularly describe and ascertain the nature of the said invention, and in what manner the same was to be performed, within the meaning of the said letters-patent... | |
 | Great Britain. Court of Common Pleas, John Scott - 1843 - 966 str.
...and described in and by the letters patent and specification ; wherefore that the said letters patent were void — fifthly, that the plaintiff did not...as aforesaid," particularly describe and ascertain Hie nature of the invention, and in what manner the same was to be performed. Issue having been joined... | |
 | Thomas Webster - 1844 - 796 str.
...effect. The proviso obliges the patentee, by an instrument in writing under his hand, particularly to describe and ascertain the nature of the invention, and in what manner the same is to be performed. Now these things are prescribed upon the face of the patent itself as conditional.... | |
 | Thomas Webster - 1844 - 1114 str.
...patent for a notion or a principle ; you must show, according to the terms of the conditions, you must describe and ascertain the nature of the invention, and in what manner the same is to be performed. Is not this a most material part of the specification ? The whole novelty consists... | |
 | Andrew Pritchard - 1847 - 840 str.
...that capacity. The "express condition " required by the Patent Grant is, that the Inventor " shall particularly describe and ascertain the nature of the Invention, and in what manner the same is to be performed, by an instrument in writing," to be enrolled in the High Court of Chancery, within... | |
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A complete specification, whether left on application or subsequently, must particularly describe and ascertain the nature of the invention, and in what manner it is to be performed, and must be accompanied by drawings, if required. 
