Category:Ralph Hart Tweddell
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British mechanical engineer and inventor of the hydraulic riveter (1843–1895)  | |||||
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| Date of birth | 1843 | ||||
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| Date of death | 1895 | ||||
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Media in category "Ralph Hart Tweddell"
The following 2 files are in this category, out of 2 total.
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Ralph Hart Tweddell (with signature) - Cassier's 1895-01.png 2,427 × 3,586; 4.42 MB
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Ralph Hart Tweddell - Cassier's 1895-01.png 2,036 × 2,850; 3.83 MB
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