|
GB699319A
|
|
Improvements in or relating to electrical transformers
|
|
US2612582A
|
|
Combined arc welding electrode holder and high-frequency generator
|
|
GB593834A
|
|
Improvements in arc welding
|
|
GB613419A
|
|
Apparatus and method for heating work by the use of high-frequency electrical energy
|
|
GB593495A
|
|
Improvements in arc welding and in high-frequency ionisers therefor
|
|
US2425528A
|
|
Terminal joint for electric cable with plastic sheath
|
|
US2337714A
|
|
Welding rod or electrode
|
|
GB554239A
|
|
Improvements in or relating to welding rods or electrodes
|
|
GB553171A
|
|
Improvements in or relating to the manufacture of metal welding rods
|
|
GB553170A
|
|
Improvements in or relating to the manufacture of metal welding rods
|
|
GB530807A
|
|
Improvements relating to electric transformers
|
|
CA430648A
|
|
Electric heating and working method for thermoplastics
|
|
CA510470A
|
|
Electrical arc welding
|
