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Patent No. 1,645,427. "Rotary-Balanced Rocket"; granted to Thomas G. Hitt, of Seattle, Washington.
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| Date/Time | Dimensions | User | Comment | |
|---|---|---|---|---|
| current | 22:43, 1 April 2020 | (253 KB) | RobertG (Talk | contribs) | (Patent No. 1,645,427. "Rotary-Balanced Rocket"; granted to Thomas G. Hitt, of Seattle, Washington.) |
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