NL229703A - - Google Patents
Info
- Publication number
- NL229703A NL229703A NL229703A NL229703A NL229703A NL 229703 A NL229703 A NL 229703A NL 229703 A NL229703 A NL 229703A NL 229703 A NL229703 A NL 229703A NL 229703 A NL229703 A NL 229703A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J41/00—Discharge tubes for measuring pressure of introduced gas or for detecting presence of gas; Discharge tubes for evacuation by diffusion of ions
- H01J41/12—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps
- H01J41/18—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes
- H01J41/20—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of cold cathodes using gettering substances
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US673816A US2993638A (en) | 1957-07-24 | 1957-07-24 | Electrical vacuum pump apparatus and method |
| US801186A US3088657A (en) | 1959-03-23 | 1959-03-23 | Glow discharge vacuum pump apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL229703A true NL229703A (en:Method) | 1965-06-25 |
Family
ID=27101017
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL229703A NL229703A (en:Method) | 1957-07-24 | 1958-07-18 | |
| NL6504257A NL131436C (nl) | 1957-07-24 | 1965-04-02 | Ionen-vacuümpomp |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6504257A NL131436C (nl) | 1957-07-24 | 1965-04-02 | Ionen-vacuümpomp |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1181364B (en:Method) |
| GB (2) | GB883190A (en:Method) |
| NL (2) | NL229703A (en:Method) |
-
1958
- 1958-07-02 GB GB13828/61A patent/GB883190A/en not_active Expired
- 1958-07-18 NL NL229703A patent/NL229703A/nl unknown
-
1960
- 1960-03-03 GB GB7583/60A patent/GB942546A/en not_active Expired
- 1960-03-04 DE DEV21817A patent/DE1181364B/de active Pending
-
1965
- 1965-04-02 NL NL6504257A patent/NL131436C/nl active
Also Published As
| Publication number | Publication date |
|---|---|
| GB942546A (en) | 1963-11-27 |
| DE1181364B (de) | 1964-11-12 |
| NL131436C (nl) | 1971-05-17 |
| GB883190A (en) | 1961-11-22 |
| NL6504257A (nl) | 1965-06-25 |