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B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
B63G8/36—Adaptations of ventilation, e.g. schnorkels, cooling, heating, or air-conditioning
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FR454004D1913-02-051913-02-05Perfectionnements aux projecteurs de lumière sous-marins ou appareils similaires soumis à une forte pression d'eau
ExpiredFR454004A
(fr)