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Patent No. 1,980,266. "Propulsion Apparatus"; granted to Robert H. Goddard, of Worcester, Mass.
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 22:43, 1 April 2020 | (726 KB) | RobertG (Talk | contribs) | (Patent No. 1,980,266. "Propulsion Apparatus"; granted to Robert H. Goddard, of Worcester, Mass.) |
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