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GB563700A
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Improvements in or relating to ash trays
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US2131943A
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Control device
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GB439321A
|
|
Improvements in electric thermal switches
|
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GB441640A
|
|
Improvements in electric alarm and/or control devices
|
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GB395393A
|
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Improvements in relays for indicating or control apparatus
|
|
GB394025A
|
|
Improvements in or relating to electrical thermometers
|
|
GB357316A
|
|
Improvements in temperature controlled safety or alarm devices for heated apparatus
|
|
GB343017A
|
|
Improvements in or relating to the control of the temperature of enclosed structures
|
|
GB328456A
|
|
Improvements in or relating to means for controlling the temperature in silos, and other large zones or spaces
|
|
GB324961A
|
|
Improvements in thermostatic control means for heating and cooling systems
|
|
GB323022A
|
|
Improvements in and relating to sensitive electrical regulating, indicating or recording devices
|
|
GB275036A
|
|
A method of and means for indicating super-normal temperatures in silos, large storage bins and other large zones or spaces
|
|
GB275016A
|
|
Improvements in means for measuring the working temperatures in the cylinders of internal combustion engines
|
|
GB271565A
|
|
Improvements in and relating to optical pyrometers
|
|
GB266060A
|
|
Improvements in and relating to optical pyrometers
|
|
GB261116A
|
|
Improvements in and relating to sensitive electrical regulating or indicating devices
|
|
GB234751A
|
|
Improvements in or relating to electrical measuring and recording instruments
|
|
GB232530A
|
|
Improvements in or relating to indicating and recording instruments
|
|
GB249612A
|
|
Improvements in and relating to adjustable sensitive electrical regulating devices
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GB233606A
|
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Improvements in radiation pyrometers
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