NL236247A - - Google Patents
Info
- Publication number
- NL236247A NL236247A NL236247DA NL236247A NL 236247 A NL236247 A NL 236247A NL 236247D A NL236247D A NL 236247DA NL 236247 A NL236247 A NL 236247A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/02—Electrodes; Magnetic control means; Screens
- H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
- H01J23/087—Magnetic focusing arrangements
- H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3013172X | 1958-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL236247A true NL236247A (en:Method) |
Family
ID=17895398
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL236247D NL236247A (en:Method) | 1958-02-25 | ||
| NL104829D NL104829C (en:Method) | 1958-02-25 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL104829D NL104829C (en:Method) | 1958-02-25 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3013172A (en:Method) |
| NL (2) | NL104829C (en:Method) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3401295A (en) * | 1965-05-21 | 1968-09-10 | Hitachi Ltd | Periodic permanent magnet focusing system for electron discharge devices |
| DE3014404C2 (de) * | 1979-04-11 | 1985-04-18 | Nippon Electric Co., Ltd., Tokio/Tokyo | Lauffeldröhre |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB742070A (en) * | 1953-03-26 | 1955-12-21 | Standard Telephones Cables Ltd | Improvements in or relating to magnet assemblies which are long compared to their cross-sectional dimensions |
| US2847607A (en) * | 1953-04-29 | 1958-08-12 | Bell Telephone Labor Inc | Magnetic focusing system |
| US2867744A (en) * | 1953-09-30 | 1959-01-06 | Bell Telephone Labor Inc | Traveling wave tube |
| US2867745A (en) * | 1953-10-07 | 1959-01-06 | Bell Telephone Labor Inc | Periodic magnetic focusing system |
| US2863086A (en) * | 1954-02-09 | 1958-12-02 | Bell Telephone Labor Inc | Traveling wave tube |
| US2812470A (en) * | 1954-10-22 | 1957-11-05 | Bell Telephone Labor Inc | Periodic focusing in traveling wave tubes |
| GB785110A (en) * | 1955-06-28 | 1957-10-23 | Standard Telephones Cables Ltd | Electron tube magnetic focusing device |
-
0
- NL NL236247D patent/NL236247A/xx unknown
- NL NL104829D patent/NL104829C/xx active
-
1959
- 1959-01-29 US US789846A patent/US3013172A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| NL104829C (en:Method) | |
| US3013172A (en) | 1961-12-12 |