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ES220228A1
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Extractor-separator of oils and other substances by ultrasound waves (Machine-translation by Google Translate, not legally binding)
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US2844051A
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Automatic transmission
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ES205054A1
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An automatic progressive transmission system (Machine-translation by Google Translate, not legally binding)
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ES194477A1
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A progressive transmission system
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ES147796A1
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New system of transmission by flyers.
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ES139145A1
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An elastic transmission system.
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ES135164A1
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A device to absorb mechanical work without producing heat, electrical energy or movement of fluids coupled to motors of all kinds.
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