ES81971A1 - Un sistema mejorado, con su correspondiente aparato, para encender los hogares de los generadores de vapor y otros por el estilo.
- Google Patents
Un sistema mejorado, con su correspondiente aparato, para encender los hogares de los generadores de vapor y otros por el estilo.
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ES81971A1922-06-101922-06-10Un sistema mejorado, con su correspondiente aparato, para encender los hogares de los generadores de vapor y otros por el estilo.
ExpiredES81971A1
(es)