Image:Heylandt Missile.pdf
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Heylandt_Missile.pdf (file size: 86 KB, MIME type: application/pdf)
Patent DE1439237 for Paul Heylandt's liquid oxygen missile circa 1921
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 06:13, 28 July 2015 | (86 KB) | RobertG (Talk | contribs) | (Patent DE1439237 for Paul Heylandt's liquid oxygen missile circa 1921) |
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