|
GB492358A
|
|
Improvements in use of glow discharge lamps
|
|
GB471269A
|
|
Improvements in whipstitching apparatus
|
|
GB458369A
|
|
Improvements in heat accumulating stoves
|
|
GB188990A
|
|
Building block
|
|
GB157937A
|
|
Improved anti-friction ball or roller bearings
|
|
GB157936A
|
|
Improved mounting for anti-friction ball or roller bearings
|
|
GB152685A
|
|
Cages for roller bearings
|
|
GB152346A
|
|
Improvements in roller cages for roller bearings
|
|
GB142473A
|
|
Improvements in belt pulleys and similar devices
|
|
GB139208A
|
|
Improvements in plummer blocks for bearings
|
|
GB137047A
|
|
Improvements in pulleys
|
