|
GB495972A
|
|
High-pressure diaphragm
|
|
US2203859A
|
|
High pressure membrane
|
|
GB488579A
|
|
Improvements in bellows
|
|
GB387250A
|
|
Improvements in devices for cleaning boiler and like pipes
|
|
GB392512A
|
|
Improvements in and relating to cleansing apparatus for tubes
|
|
GB380435A
|
|
Improvements in and relating to tube cleaning devices
|
|
GB377723A
|
|
Improvements in and relating to means for cleansing tubes
|
|
US1999559A
|
|
Apparatus for cleaning tubes
|
|
GB304570A
|
|
Improvements in tube cleaning devices
|
|
US1693134A
|
|
Device for cleaning tubes or the like
|
|
GB255370A
|
|
Improvements in devices for cleaning tubes
|
