Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F01
MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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F01D
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
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3/00
Machines or engines with axial-thrust balancing effected by working-fluid
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F01D3/02
characterised by having one fluid flow in one axial direction and another fluid flow in the opposite direction
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