| IPC 7 English version |
| Class B63 |
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| SECTION B – PERFORMING OPERATIONS; TRANSPORTING |
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| B 63 | SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT |
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| B 63 B | SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (air-cushion vehicles B60V; arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J 2/00) [2] |
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| B 63 C | LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS (floating nets, floating slipways, or the like for recovering aircraft from the water B63B 35/52) |
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| B 63 G | OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS (means of attack or defence in general, e.g. turrets, F41H) |
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| B 63 H | MARINE PROPULSION OR STEERING (peculiar to submarines, other than nuclear propulsion, B63G; peculiar to torpedoes F42B 19/00) |
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| B 63 J | AUXILIARIES ON VESSELS |
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