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Catalogue description Sighting devices for use on aircraft by Prof. J B Henderson: patent application 607/15
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| Reference: | AVIA 8/265 |
|---|---|
| Description: |
Sighting devices for use on aircraft by Prof. J B Henderson: patent application 607/15 |
| Date: | 1915 - 1932 |
| Held by: | The National Archives, Kew |
| Former reference in its original department: | S.31291 |
| Legal status: | Public Record(s) |
| Closure status: | Open Document, Open Description |
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