Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of NL50265CpublicationCriticalpatent/NL50265C/xx
H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
H01J25/50—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field
H01J25/52—Magnetrons, i.e. tubes with a magnet system producing an H-field crossing the E-field with an electron space having a shape that does not prevent any electron from moving completely around the cathode or guide electrode
G—PHYSICS
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
G03D13/02—Containers; Holding-devices
G03D13/04—Trays; Dishes; Tanks ; Drums
G03D13/06—Light-tight tanks with provision for loading in daylight
H—ELECTRICITY
H01—ELECTRIC ELEMENTS
H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
H01F19/00—Fixed transformers or mutual inductances of the signal type
H01F19/04—Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range