Focus on
Olga Gray and the Woolwich Arsenal Spy Ring
In 1938, thanks to years of work by a remarkable female agent, MI5 ensured a package of British defence plans stayed secret.
Piece
Mechanism for releasing bombs by Cyril Louis Ball: secret patent no. 14394/18
Catalogue reference: AVIA 8/322
What’s it about?
This record is about the Mechanism for releasing bombs by Cyril Louis Ball: secret patent no. 14394/18 dating from 1935 in the series Air Ministry and successors: Inventions, and Research and Development, Registered.... It is held at The National Archives, Kew.
Is it available online?
No, this record is not available online. However, you can order a copy. Other ways to view it.
Can I see it in person?
Yes, this record is held at The National Archives and is available to see in person. How to view it.
Full description and record details
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Reference (The unique identifier to the record described, used to order and refer to it)
- AVIA 8/322
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Date (When the record was created)
- 1935
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Description (What the record is about)
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Mechanism for releasing bombs by Cyril Louis Ball: secret patent no. 14394/18
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Held by (Who holds the record)
- The National Archives, Kew
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Former department reference (Former identifier given by the originating creator)
- S.36160
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Legal status (A note as to whether the record being described is a Public Record or not)
- Public Record(s)
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Closure status (Whether the record is ‘open’ (available to the public) or ‘closed’ (not available due to a legal exemption))
- Open Document, Open Description
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Subjects (Categories and themes found in our collection (our subject list is under development, and some records may have no subjects or fewer than expected))
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Record URL
- https://beta.nationalarchives.gov.uk/catalogue/id/C1977226/
How to order it
- View this record page in our current catalogue
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- Select an option and follow instructions
Series information
AVIA 8
Air Ministry and successors: Inventions, and Research and Development, Registered...
See the series level description for more information about this record.
Catalogue hierarchy
Over 27 million records
This record is held at The National Archives, Kew
96,520 records
Within the department: AVIA
Records created or inherited by the Ministry of Aviation and successors, the Air...
580 records
Within the series: AVIA 8
Air Ministry and successors: Inventions, and Research and Development, Registered...
You are currently looking at the piece: AVIA 8/322
Mechanism for releasing bombs by Cyril Louis Ball: secret patent no. 14394/18
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