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Priority to ES0260614ApriorityCriticalpatent/ES260614A1/en
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Structures Of Non-Positive Displacement Pumps
(AREA)
Abstract
Improvements in the compression sound devices, characterized by having inside an enclosure an electric motor connected to a compressor, an oscillating membrane and a helical acoustic channel which is characterized by the fact that the acoustic channel surrounds the compressor and the vibrating membrane and is limited by the housing. (Machine-translation by Google Translate, not legally binding)
ES0260614A1960-08-261960-08-26Improvements in sound compression devices (Machine-translation by Google Translate, not legally binding)
ExpiredES260614A1
(en)