US822223A
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Automatic controller for pressure systems.
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US858471A
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Controlling apparatus for pressure systems.
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US858470A
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Fluid-pressure system.
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US804344A
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Electrical switching apparatus.
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US864990A
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Water-governor.
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US858469A
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Fluid-pressure system.
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US773523A
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Lubrication control for fluid-pressure apparatus.
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US843033A
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Fluid-pressure regulator.
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US821672A
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Automatic controller for motor-compressors.
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US821747A
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Controlling apparatus.
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US760565A
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Electrical switching apparatus.
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US778333A
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Electric-current governor.
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US708664A
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Commutator-brush holder.
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