File:US1330701-Figure 1.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 20:06, 26 December 2016 | 1,672 × 720 (20 KB) | MichaelFrey | {{Information |Description ={{en|1=Bubble-pipe}} |Source =https://www.google.com/patents/US1330701 |Author =John L. Gilchrist |Date =1918 |Permission = |other_versions = }} {{PD-US-patent-no notice}} |
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