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Individual
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Individual
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Priority to ES9848ApriorityCriticalpatent/ES9848A2/en
Publication of ES9848A2publicationCriticalpatent/ES9848A2/en
ES9848A1889-07-261889-07-26
Improvements introduced in the apparatus to increase the luminous force in the gas light, without increase of fluid.
ExpiredES9848A2
(en)