|
GB841299A
|
|
Improvements in or relating to dampers for the control of the flow of air or other gas
|
|
GB620922A
|
|
Improvements in or relating to circular drying ovens
|
|
GB606911A
|
|
Improvements in or relating to electric conduit and cable junction boxes
|
|
GB607032A
|
|
A new or improved double-acting valve
|
|
GB596863A
|
|
Improvements in ventilator fittings
|
|
GB552591A
|
|
Improvements in and connected with electrical systems for heating fluids in pipes and in containers
|
|
ES117832A1
|
|
Improvements in the heating and cooling of buildings.
|
|
ES117831A1
|
|
Improvements in the heating or cooling of buildings.
|
|
GB191224685A
|
|
Improvements in Coffee Making or Brewing Machines.
|
|
GB191111396A
|
|
Improved Method or Installation for Heating and Cooling Buildings.
|
