Plastics aerator shelter for plants - has flexible polyethylene or polyethyl-ene terephthalate envelope(s)
Реферат: Aerator for shelters for plants covered with plastics sheets comprises expansible envelope(s) of flexible pref. polyethylene or polyethylene terephthalate, which can deviate part(s) of the sheets from their normal position, to form an air entry or exit opening. The envelope may pref. be expanded by inflation.
Device for planting seedlings of flower plants in greenhouses
Номер патента: RU2723191C1. Автор: Михаил Иванович Голубенко. Владелец: Михаил Иванович Голубенко. Дата публикации: 2020-06-09.