RU Group V

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This appears to be the main Russian classification for aeronautics before 1910.

Per the Russian Technical Society in 1905 this classification includes:[1]

Группа V. Домашняя утварь. Галантерейные ручные и дорожные предметы. Ножевый товаръ. Слесарныя издѣлія. Спортъ. Музыкальные инструменты съ принадлежностями. Измѣрительные приборы: оптическіе, физическіе, химическіе и чертежные. Часовое дѣло.

The closest matches to aeronautics are Спортъ/Sports and дорожные предметы / travel objects. One can imagine aeronautics being shoehorned into this category after not really being envisioned in the original system.

References

  1. Notes of the Russian Technical Society, Vol. 39 (1905), p. 77; Vol. 41 (1906), p. 54.
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This wiki has 33 patents in category "RU Group V".

Patents in category RU Group V