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GB1014064A
|
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Improvements to shaft seals
|
|
GB953474A
|
|
Improvements in shaft glands
|
|
GB937713A
|
|
Improvements relating to magnetic devices responsive to varying liquid levels
|
|
GB919358A
|
|
Improvements relating to apparatus for controlling the movement of one member in accordance with the movement of another
|
|
GB877445A
|
|
Improvements relating to boilers and similar apparatus with auxiliary chambers housing level controllers or other mechanism
|
|
GB897034A
|
|
Improvements in magnetic coupling devices
|
|
GB853732A
|
|
Improvements relating to magnetic devices
|
|
GB805253A
|
|
Improvements relating to packing rings
|
|
US2893427A
|
|
Valve structure
|
|
DE1024303B
|
|
Valve operated by two magnets acting on one another
|
|
GB765708A
|
|
Improvements relating to magnetic devices responsive to varying liquid levels
|
|
GB813260A
|
|
Improvements relating to magnetically operated valves
|
|
GB761682A
|
|
Improvements in rotary magnetic transmissions
|
|
GB762363A
|
|
Improvements in control mechanism for electric switches
|
|
GB731755A
|
|
Improvements relating to photo-electric cells
|
|
GB750413A
|
|
Improvements in magnetic actuating devices
|
|
DE937509C
|
|
Alarm system working with photoelectric means, in particular for displaying smoke or the like.
|
|
GB723905A
|
|
Improvements in photo-electric detecting apparatus
|
|
US2790459A
|
|
Relay mechanism
|
|
DE965037C
|
|
Control device for the liquid supply to a boiler or the like.
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