Webster, Thomas. <br/><br/>
On the amendment of the law and practice of letters patent for inventions.  By Thomas Webster, ... 

 - 2nd ed. 
 - London :  Chapman and Hall; F. Elsworth,  1852. 
 - vi, 42p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Patent laws and legislation--Great Britain.