Details
- Title'Improvements in or relating to emissive cathodes' (Barium Zirconate Cathode) by Siemens Electric Lamps and Supplies Ltd Patent Application No. 29623/51
- ReferenceUK0108 SC MSS 135/C/30
- Date1951
- Physical descriptionNumber of pieces: 1
- LanguageEnglish.
- Persons keyword
- Subject
- Conditions governing accessOpen access
- Level of descriptionfile
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