| 1 |  | DuPont izstrādā jaunu sintētisko materiālu - neilonu | 26.10.1938 | lv, ru | | 2 |  | Rīgas pilsēta noslēdz līgumu par elektriskā tramvaja būvi Aleksandra ielā | 10.05.1900 | lv |
| 3 |  | Samuel Colt sold his first revolver pistol to the US government | 04.01.1847 | en, lv |
| 4 |  | Briton Edwin Budding signed an agreement for his new invention, the lawn mower, to go into production | 18.05.1830 | en, lv |