On the cost of patents of invention in different countries :

a paper read before the Statistical Section of the British Association, at Edinburgh, August 2nd, 1850.
Bibliographic Details
Main Creator: Hancock, W. Neilson (William Neilson), 1820-1888.
Format: Book
Language:English
Published / Created: Dublin : Hodges and Smith, 1850.
Notes:Physical description: 10 p. ; 21 cm.
Contained in: Pamphlet volume A24465