|
GB1064547A
|
|
A thermal non-self-reclosing cut-out or cut-in control to make or break an electric circuit at a predetermined temperature
|
|
GB950322A
|
|
Improvements in struts and tie-rods used for strengthening girder arches used in mines and other places
|
|
GB898832A
|
|
Improvements in clamps for fixing brackets and other attachments to structural sections for use in mines and other places
|
|
GB898592A
|
|
Improvements in struts and tie-rods used for strengthening girder arches used in mines and other places
|
|
GB912940A
|
|
Improvements in or relating to struts and tie-rods
|
|
GB880496A
|
|
Improvements in struts and tie-rods for mine arches and girders
|
|
GB847470A
|
|
Improvements in collapsible load supporting mechanism for use in mines and other places
|
|
GB865470A
|
|
Relief valve, e.g. for a yielding hydraulic prop, hydraulic chock, pump, pipeline orpressure vessel
|
|
GB856062A
|
|
Improvements in clamps for fixing brackets and other attachments to structural sections for use in mines and other places
|
|
GB849698A
|
|
Improvements in struts and tie-rods for mine arches and the like
|
|
GB843290A
|
|
Improvements in struts and tie-rods for mine arches and the like
|
|
GB838790A
|
|
Improvements in or relating to telescopic hydraulic props
|
|
GB798651A
|
|
Improvements in glands for armour protected electric cables
|
|
GB791403A
|
|
Improvements in rotary drill bits, or drill heads, for making holes in coal, rock and other strata required in mines and other places
|
|
GB806051A
|
|
Improvements in clamps for fixing brackets and other attachments to structural sections for use in mines and other places
|
|
GB798722A
|
|
Improvements in, or relating to, collapsible supporting devices for mine roofs and the like
|
|
GB746961A
|
|
Improvements in collapsible load-supporting mechanisms such as chocks in coal mines
|
|
GB749454A
|
|
Improvements in pit props and similar collapsible load-supporting mechanism
|
|
GB746762A
|
|
Improvements in roof and similar supports for use in mines and other places
|
|
CA596163A
|
|
Hydraulically extendible supports
|
