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Rudolf Pawlikowski
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Publication of GB190001951ApublicationCriticalpatent/GB190001951A/en
1951. Pawli - kowski, R. Jan. 31. Gas and like engines. - The exhaust or inlet valves 1 are made hollow, and are cooled by the circulation of air through them or water as shown.
GB190001951D1900-01-311900-01-31Improvements in Explosion and Internal Combustion Engines.
ExpiredGB190001951A
(en)