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GB190908315A
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Improvements in and relating to Electrically Operated Valves.
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US951862A
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Mechanical push-button valve.
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GB190424663A
|
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Improvements in Electrical Valve Controlling Systems.
|
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GB190220553A
|
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Improvements in Electro-magnetic Valve Controlling Apparatus.
|
|
GB190220555A
|
|
Improvements in Electro-magnets.
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GB190220557A
|
|
Improvements in the Electrical Control of the Water Supply of Lavatories, Bath Tubs, Shower Baths and Bowls.
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GB190220552A
|
|
Improvements in Electric Switches.
|
|
GB190220556A
|
|
Improvements in Electro-magnetic Valve-controlling Apparatus.
|
|
GB190117556A
|
|
Improvements in Electro-magnetic Apparatus for Operating Valves and for other Purposes
|
|
GB190112301A
|
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Improvements in Wash Stands or Lavatory Bowls.
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