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US3562823A
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Wave producing machine,especially for swimming pools
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DE1043704B
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Devices for automatic heat regulation by ventilation in greenhouses, flowerbeds, halls and other rooms
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DE861191C
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Tension stand for photographic apparatus
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DE819078C
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High-speed wind turbine with a large torque
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DE819079C
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Force balance on pump windmills
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DE819080C
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Self-regulating wind power station
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GB394905A
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Mount for pictures, photographs and the like
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ES103687A1
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Hygienic device.
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ES103686A1
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Device to prevent the spread of tuberculosis.
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GB288465A
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Improvements in and relating to containers for used bandages and the like
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GB285720A
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An appliance for preventing the spread of tuberculosis
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ES103050A1
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Means to combat the spread of tuberculosis.
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GB275935A
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Improvements in means for fighting the spreading of tuberculosis
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GB252704A
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Improvements relating to the improving, annealing and cooling of metal articles
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GB254278A
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Improvements relating to annealing and hardening steel wires and bands
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DE413534C
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Regulating device on wind power machines
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DE440378C
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Wind motor for pumping with gear parts housed in a closed housing and a compensating spring for the linkage forces
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DE348061C
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Wind motor with a motor body rotatably mounted in a tubular body
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