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| Patents Granted on 1803-08-?? | |||||
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| Number | Date | Patentee | Title | Type | |
| GB-180,302,730 | Aug. 03, 1803 | B. Donkin | Producing a rotary motion | industrial machine mechanisms | |
| 478X | Aug. 04, 1803 | L. Granty (Geanty) | Improvement in the construction of stills | steam stills | |
| 479X | Aug. 24, 1803 | J.B. Aveilhe | Machine for Boring Holes in Rocks Under Water | stone boring and drilling machines | |
| 480X | Aug. 25, 1803 | G. Youle | Improvement in a Water Cock | faucets | |