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Individual
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Individual
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Priority to ES11165ApriorityCriticalpatent/ES11165A1/en
Publication of ES11165A1publicationCriticalpatent/ES11165A1/en
ES11165A1890-08-211890-08-21
Improvements in the mechanical fire guards used in the hearths of steam boilers and in other kinds of hearths.
ExpiredES11165A1
(en)