首页>
外国专利>
mechanical device which inflates to tear or button, a balloon colored enclosed in a bracelet or necklace that rises from the surface of the water a few feet tied to a string and marksthe a person in danger of life and its immediate location on the bottom
mechanical device which inflates to tear or button, a balloon colored enclosed in a bracelet or necklace that rises from the surface of the water a few feet tied to a string and marksthe a person in danger of life and its immediate location on the bottom