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Резюме
Face worm gear illustration from U.S. Patent 6,128,969 (2000), cropped, edited, annotated.
Тэги
патенты
патентные чертежи
патентное бюро США
гипоидные конические шестерни
червячные передачи
изобретения
Дата
24/12/2010
Источник
USPTO
Ссылка
Информация о правах
public domain