| BPN | British Patent Number(s) |
| BPP | British Parliamentary Papers |
| CPJ | Commissioners of Patents' Journal, 1-3130 ( 1854-83) |
| EB11 | Encyclopaedia Britannica, eleventh ed., vols. 1-28 |
| ERO | Essex Record Office, Chelmsford |
| H2 | Hansard, second series, vols. 1-21 ( 1803-30) |
| H3 | Hansard, third series, vols. 1-356 ( 1830-91) |
| H4 | Hansard, fourth series, vols. 1-199 ( 1892- 1908) |
| IOJ(P) | Illustrated Official Journal (Patents), 1-2195 ( 1889- 1931) |
| HPC | P. A. Hayward ( 1987-8). Hayward's Patent Cases, vols. |
| 1-11. Professional Books, Abingdon. | |
| OJ(P) | Official Journal (Patents), 2196- ( 1931-) |
| PDC | Parliamentary Debates (Commons), vol. 1- ( 1909-) |
| PDL | Parliamentary Debates (Lords), vol. 1- ( 1909-) |
| PRO | Public Record Office, London and Kew |
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Publication information:
Book title: Inventions and Official Secrecy:A History of Secret Patents in the United Kingdom.
Contributors: T. O'Dell H. - Author.
Publisher: Clarendon Press.
Place of publication: Oxford.
Publication year: 1994.
Page number: ix.
This material is protected by copyright and, with the exception of fair use, may not be further copied, distributed or transmitted in any form or by any means.
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