ES239974A1 - Improvements in the construction of weight tiles, especially of doorway (Machine-translation by Google Translate, not legally binding)
- Google Patents
Improvements in the construction of weight tiles, especially of doorway (Machine-translation by Google Translate, not legally binding)
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Generator of sounds based on phonic discs, characterized by being constituted by a sound generator that essentially involves a rotating disc between two fixed plates, equidistant and parallel, which have on their internal face in front of the disc traces or metal surface elements in profile and of placement determined according to the desired sounds, these elements being symmetrical in relation to the disc. (Machine-translation by Google Translate, not legally binding)
ES0239974A1958-01-241958-01-24Improvements in the construction of weight tiles, especially of doorway (Machine-translation by Google Translate, not legally binding)
ExpiredES239974A1
(en)