IPC Subgroup
H01J 37/27 Shadow microscopy
Introduced: January 1980
Last revised: January 2006
Full Title
Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof > Electron or ion microscopes; Electron- or ion-diffraction tubes > Shadow microscopy
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS