Electricity: magnetically operated switches, magnets, and electr
Magnets and electromagnets
For magnetizing or demagnetizing
Inventor
active
Cathode-ray tube having a magnetic quadrupole shadow mask
Devices for manufacturing a magnetic quadrupole post-focusing ma
Methods of manufacturing a color display tube having a magnetic
Shadow mask each aperture of which is defined by a quadrupolar l
Shadow mask having magnetic quadrupoles around each mask apertur
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