Abstract:
A method of making a gas-discharge panel comprising etching discharge cavities and interconnecting channels between the discharge cavities out of strip-shaped electrodes embedded in insulating plates. The channels are etched beneath the surface of the insulating plate to depths which do not allow a discharge in one cavity to strike a discharge in adjacent cavities.
Abstract:
1. IN THE METHOD OF MANUFACTURING A GAS-DISCHARGE DISPLAY PANEL COMPRISING AT LEAST ONE BOTTOM PLATE AND ONE TOP PLATE OF INSULATING, TRANSPARENT MATERIAL, THE BOTTOM AND TOP PLATES BEING PROVIDED WITH STRIP-SHAPED RELATIVELY INSULATED CONDUCTORS, PARTS OF THE SURFACES OF WHICH ARE IN CONTACT WITH A GAS ATMOSPHER IN CAVITIES BETWEEN THE CONDUCTORS, THE STEPS OF EMBEDDING A COMBSHAPED CONDUCTOR IN AN INSULATING PLATE WITH THE TINES OF THE COMB-SHAPED CONDUCTOR EXTENDING UP TO THE SURFACE OF THE PLATE, AND THEREAFTER CHEMICALLY ETCHING THE TINES TO FORM CAVITIES IN THE INSULATING PLATE.
Abstract:
A metal article, for example, in the form of a lead-in or sealing conductor or a perforated intermediate plate of a gas discharge panel for picture display preferably consisting of anodised aluminium, in which the thickness of the oxide layer and of the underlying metal core are chosen to be so that the thermal expansion of the article is also determined by the oxide layer.
Abstract:
THE INVENTION RELATES TO SPRAY VACCINES IN WHICH THE ANTIGEN MATERIAL IN A DRY FORM IS DISPERSED IN A LIQUID PROPELLANT. THE DISPERSING AGENT USED IS NOT A LIQUID AND AT THE SAME TIME NON-IONIC COMPOUND, BUT LECITHIN WHICH IS SOLID AND IONIC.
Abstract:
A method of manufacturing a perforated plate comprising placing a plurality of tubes in the holes of at least one perforated base plate, and filling the space between the tubes with a material having a lower softening temperature than that of the tubes. This formed block is then cut in a direction transverse to the tubes to form thinner perforated plates.