|
GB705688A
|
|
Improvements relating to the jointing of pipes
|
|
GB534660A
|
|
Improvements relating to the construction of inspection, intercepter and like chambers
|
|
GB509595A
|
|
Machine for moulding concrete conduits
|
|
GB494232A
|
|
Bomb-proof and gas-proof bombardment shelters
|
|
GB462431A
|
|
An improved concrete pipe moulding machine
|
|
GB450277A
|
|
Improvements relating to seals or joints for cesspits and like chambers for drainage and sewage systems
|
|
GB412019A
|
|
Improvements in and relating to moulded concrete blocks
|
|
GB375234A
|
|
Concrete paving slabs
|
|
GB390878A
|
|
Hollow construction blocks and methods of and means for their manufacture
|
|
GB370195A
|
|
Improved gully pot
|
|
GB372467A
|
|
Improvements relating to pipe joints
|
|
GB365805A
|
|
Improvements in or relating to conduits for drainage purposes
|
|
GB363086A
|
|
Improvements relating to curbs and edgings for paths and pavements
|
|
GB311542A
|
|
An appliance for use in concrete road construction
|
|
CA489322A
|
|
Manufacture of concrete pipes
|
|
CA483102A
|
|
Method of and apparatus for the formation of concrete pipes
|
