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File:Patent-FR-33407E.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (164 KB)) - 01:48, 12 dic 2021
File:Patent-DE-952418.pdf ==Informazioni== ...79}}, {{MentionPatent|US|2595097}}. {{SamePatent|US|2805645}} {{SamePatent|FR|1094189}} {{SamePatent|BG|749290}} {{SamePatent|CA|556148}}(1 296 × 1 754 (268 KB)) - 02:30, 11 dic 2021
File:Patent-FR-06524E.pdf |Country=FR ==Informazioni==(1 247 × 1 747 (73 KB)) - 02:29, 11 dic 2021
File:Patent-FR-22935E.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (79 KB)) - 01:43, 12 dic 2021
File:Patent-FR-22933E.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (150 KB)) - 01:49, 12 dic 2021
File:Patent-FR-21880E.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (97 KB)) - 01:48, 12 dic 2021
File:Patent-FR-657681.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (422 KB)) - 01:48, 12 dic 2021
File:Patent-FR-59403E.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (139 KB)) - 01:49, 12 dic 2021
File:Patent-DE-1234578.pdf ==Informazioni== ...{{MentionPatent|FR|377047}}, {{MentionPatent|FR|737250}}, {{MentionPatent|FR|1020261}}, {{MentionPatent|GB|169616}}, {{MentionPatent|GB|344185}}, {{Ment(1 295 × 1 752 (321 KB)) - 02:17, 11 dic 2021
File:Patent-DE-1009055.pdf ==Informazioni== ...{{MentionPatent|DE|388317}}, {{MentionPatent|FR|814135}} e {{MentionPatent|FR|911164}}.(1 296 × 1 754 (229 KB)) - 02:21, 11 dic 2021
File:Patent-FR-57796E.pdf |Country=FR ==Informazioni==(1 296 × 1 754 (76 KB)) - 01:30, 12 dic 2021
File:Patent-DE-1008605.pdf ==Informazioni== ...t|US|2935969}} Riferimenti a {{MentionPatent|FR|1045856}}, {{MentionPatent|FR|1058739}}, {{MentionPatent|GB|620605}} e {{MentionPatent|GB|708633}}.(1 296 × 1 754 (472 KB)) - 16:17, 1 nov 2022
File:Patent-US-2676570.pdf ==Informazioni== ...entionPatent|GB|191319623}}, {{MentionPatent|FR|51255E}} e {{MentionPatent|FR|855338}}.(1 159 × 1 704 (269 KB)) - 02:15, 12 dic 2021
File:Patent-US-2871823.pdf ==Informazioni== ...atent|US|2274393}} ed inoltre {{MentionPatent|FR|957501}}, {{MentionPatent|FR|969988}}.(1 159 × 1 704 (191 KB)) - 02:15, 12 dic 2021
File:Patent-US-2871825.pdf ==Informazioni== ...tent|US|2766728}}; ed inoltre {{MentionPatent|FR|628272}}, {{MentionPatent|FR|1119961}}.(1 159 × 1 704 (245 KB)) - 02:15, 12 dic 2021
File:Patent-DE-411627.pdf ==Informazioni== Brevetto per una matita meccanica. {{SamePatent|FR|592156}}(1 295 × 1 752 (101 KB)) - 02:20, 11 dic 2021
File:Patent-US-2986119.pdf ==Informazioni== ...tent|US|2811945}}, ed inoltre {{MentionPatent|FR|628272}}, {{MentionPatent|FR|979112}}.(1 159 × 1 704 (218 KB)) - 02:13, 12 dic 2021
File:Patent-US-2237155.pdf ==Informazioni== ...ent|US|2418410}}; ed inoltre {{MentionPatent|FR|505917}} e {{MentionPatent|FR|539994}},(1 159 × 1 704 (211 KB)) - 02:01, 12 dic 2021
File:Patent-US-2690739.pdf ==Informazioni== ...tent|US|1664501}} ed inoltre {{MentionPatent|FR|365262}} e {{MentionPatent|FR|931114}}.(1 159 × 1 704 (194 KB)) - 02:15, 12 dic 2021
File:Patent-FR-25039E.pdf |Country=FR ==Informazioni==(1 295 × 1 752 (156 KB)) - 18:09, 5 nov 2022
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