AU4678459A - Improvements in or relating toa method of filling hollow spaces with powdery insulating material and indirectly heated cathode provided with sucha filling
- Google Patents
Improvements in or relating toa method of filling hollow spaces with powdery insulating material and indirectly heated cathode provided with sucha filling
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Koninklijke Philips NV
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Philips Gloeilampenfabrieken NV
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Application filed by Philips Gloeilampenfabrieken NVfiledCriticalPhilips Gloeilampenfabrieken NV
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Publication of AU231761B2publicationCriticalpatent/AU231761B2/en
Publication of AU4678459ApublicationCriticalpatent/AU4678459A/en
AU46784/59A1959-03-16Improvements in or relating toa method of filling hollow spaces with powdery insulating material and indirectly heated cathode provided with sucha filling
ExpiredAU231761B2
(en)
Improvements in or relating toa method of filling hollow spaces with powdery insulating material and indirectly heated cathode provided with sucha filling
Improvements in or relating toa method of filling hollow spaces with powdery insulating material and indirectly heated cathode provided with sucha filling