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Applied Scientific Research, Section B

, Volume 3, Issue 1, pp 141–141 | Cite as

A metal vacuum valve

  • G. M. van Koppen
Letter to the editor
  • 8 Downloads

Keywords

Electron Microscope Rubber Technical Physic Vacuum Chamber Physic Department 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Copyright information

© Martinus Nijhoff 1954

Authors and Affiliations

  • G. M. van Koppen
    • 1
  1. 1.Technical Physics Department T.N.O. and T.H.Electron Microscope DivisionDelftNetherlands

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