NL248481A - - Google Patents
Info
- Publication number
- NL248481A NL248481A NL248481DA NL248481A NL 248481 A NL248481 A NL 248481A NL 248481D A NL248481D A NL 248481DA NL 248481 A NL248481 A NL 248481A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J25/00—Transit-time tubes, e.g. klystrons, travelling-wave tubes, magnetrons
- H01J25/34—Travelling-wave tubes; Tubes in which a travelling wave is simulated at spaced gaps
- H01J25/49—Tubes using the parametric principle, e.g. for parametric amplification
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB5474/59A GB937863A (en) | 1959-02-17 | 1959-02-17 | Parametric amplifier |
| GB547460A GB934149A (en) | 1959-02-17 | 1960-02-04 | Improvements in or relating to excavating and/or loading machines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL248481A true NL248481A (en) |
Family
ID=26239912
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL248481D NL248481A (en) | 1959-02-17 | ||
| NL135895D NL135895C (en) | 1959-02-17 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL135895D NL135895C (en) | 1959-02-17 |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT216574B (en) |
| CH (1) | CH389038A (en) |
| DE (1) | DE1117780B (en) |
| FR (1) | FR1248808A (en) |
| GB (1) | GB937863A (en) |
| NL (2) | NL135895C (en) |
-
0
- NL NL248481D patent/NL248481A/xx unknown
- NL NL135895D patent/NL135895C/xx active
-
1959
- 1959-02-17 GB GB5474/59A patent/GB937863A/en not_active Expired
-
1960
- 1960-02-13 CH CH161860A patent/CH389038A/en unknown
- 1960-02-15 DE DEN17888A patent/DE1117780B/en active Pending
- 1960-02-16 AT AT118260A patent/AT216574B/en active
- 1960-02-17 FR FR818737A patent/FR1248808A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH389038A (en) | 1965-03-15 |
| FR1248808A (en) | 1960-12-23 |
| AT216574B (en) | 1961-08-10 |
| DE1117780B (en) | 1961-11-23 |
| GB937863A (en) | 1963-09-25 |
| NL135895C (en) |