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PL342583A1
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Electric heating jacket
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PL341413A1
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Method of making a flat resistance-type temperature sensor and sensor obtained thereby
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PL310488A1
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Method of and circuit for measuring resistance differential
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PL307802A1
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Cost divider
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PL170712B1
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Temperature sensor
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PL284331A1
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Thermal energy measuring apparatus
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PL281632A1
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Air conditioning station
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PL281631A1
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Programmable time lag generating circiut
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PL280322A1
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Threshold circuit for indication of voltage decays
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PL275130A1
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Relative humidity measuring transducer
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PL273071A1
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Thermometric resistor and method of making the same
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PL269037A1
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Electropneumatic measuring transducer
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PL256942A1
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Electronic arrangement for transducing resitance changes into dc or dv signals
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PL252438A1
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Method of making a metallic thermometric resistor and metallic thermometric resistor as such
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PL247558A1
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Method of capping minute blind passages in ceramic elements and apparatus therefor
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PL245411A1
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Electronic commutator in particular for step motors
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PL245089A1
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Memory circuit,especially for punched-tape readers
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PL244376A1
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Four-contact double-pole measuring terminal
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PL240401A1
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Rotary motion vibrations damper
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PL240067A1
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Method of reading of punched tape and tape reader therefor
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