O'Dell, T. H <br/><br/>
Inventions and official secrecy : a history of secret patents in the United Kingdom 
T.H. O'Dell 
 - Oxford  Clarendon Press ; Oxford University Press  1994 
 - xi, 149 p. : ill. ; 23 cm 
<br/><br/> Includes bibliographical references (p. [140]-143) and index 
<br/><br/><label>ISBN: </label>9780198259428 
<br/><br/><label>ISSN: </label>94028886 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Official secrets - Great Britain - History<br/>Patent laws and legislation - Great Britain - History<br/>Patents - Great Britain - History
<br/><br/><label>Dewey Class. No.: </label>346.410486 DEL