|
GB1163560A
|
|
Improvements in rotary ball valves
|
|
GB1198092A
|
|
Rotary Ball Plug Valves
|
|
GB1198254A
|
|
Rotary Ball Plug Valves for Controlling Fluid Flow
|
|
GB1005092A
|
|
Improvements in rotary liquid flow meters
|
|
GB1006377A
|
|
Improvements in and relating to butterfly valves
|
|
GB493760A
|
|
Improvements in self-closing valves
|
|
GB456370A
|
|
Improvements in recording and indicating instruments having an integrating dial or counter
|
|
GB452171A
|
|
Improvements relating to fluid meters
|
|
GB356973A
|
|
Improvements in non-return valves
|
|
GB356974A
|
|
Improvements in non-return valves
|
|
GB310691A
|
|
Improvements in, or relating to, valves
|
