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Elenco dei risultati
- File:Patent-DE-351930.pdf + (351930)
- File:Patent-US-1750410.pdf + (352027)
- File:Patent-CH-352252.pdf + (352252)
- File:Patent-GB-451168.pdf + (35295/35)
- File:Patent-US-1281194.pdf + (3537)
- File:Patent-GB-410437.pdf + (35389/33)
- File:Patent-CH-353996.pdf + (353996)
- File:Patent-US-D082341.pdf + (35402)
- File:Patent-US-1507782.pdf + (355088)
- File:Patent-GB-487942.pdf + (35514/36)
- File:Patent-US-1554803.pdf + (35557)
- File:Patent-US-1737948.pdf + (355851)
- File:Patent-US-2254975.pdf + (356045)
- File:Patent-US-2293622.pdf + (356235)
- File:Patent-US-2339290.pdf + (356235)
- File:Patent-US-1407552.pdf + (357870)
- File:Patent-GB-466012.pdf + (35817/36)
- File:Patent-FR-358289.pdf + (358289)
- File:Patent-GB-619349.pdf + (35845/46)
- File:Patent-CA-358526.pdf + (358526)
- File:Patent-US-856082.pdf + (358805)
- File:Patent-US-2105189.pdf + (35907)
- File:Patent-US-3292596.pdf + (359087)
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- File:Patent-US-1789522.pdf + (361758)
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- File:Patent-FR-363394.pdf + (363394)
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- File:Patent-US-1808779.pdf + (401410)
- File:Patent-GB-502381.pdf + (4019/38)
- File:Patent-FR-402317.pdf + (402317)
- File:Patent-US-2075828.pdf + (40300)
- File:Patent-BE-403084.pdf + (403084)
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- File:Patent-FR-422654.pdf + (422654)
- File:Patent-US-1863061.pdf + (422788)
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- File:Patent-US-485795.pdf + (423115)
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- File:Patent-US-1675826.pdf + (423518)
- File:Patent-US-2328580.pdf + (423693)
- File:Patent-GB-194895.pdf + (4237/22)
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- File:Patent-US-910980.pdf + (423892)
- File:Patent-US-D089815.pdf + (42431)
- File:Patent-BE-424772.pdf + (424772)
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- File:Patent-US-1415211.pdf + (425903)
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