NL251846A - - Google Patents
Info
- Publication number
- NL251846A NL251846A NL251846DA NL251846A NL 251846 A NL251846 A NL 251846A NL 251846D A NL251846D A NL 251846DA NL 251846 A NL251846 A NL 251846A
- 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 (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US815351A US3107044A (en) | 1959-05-25 | 1959-05-25 | Cold-cathode discharge ion pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL251846A true NL251846A (en) |
Family
ID=25217539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL251846D NL251846A (en) | 1959-05-25 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3107044A (en) |
| DE (1) | DE1845497U (en) |
| GB (1) | GB897599A (en) |
| NL (1) | NL251846A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3391303A (en) * | 1965-01-25 | 1968-07-02 | Lewis D. Hall | Electronic vacuum pump including a sputter electrode |
| US3443742A (en) * | 1967-06-09 | 1969-05-13 | Itt | Pumping device |
| US5240381A (en) * | 1990-08-03 | 1993-08-31 | Ebara Corporation | Exhaust apparatus and vacuum pumping unit including the exhaust apparatus |
| US20070286738A1 (en) * | 2006-06-12 | 2007-12-13 | Varian, Inc. | Vacuum ion-getter pump with cryogenically cooled cathode |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1046249B (en) * | 1956-04-05 | 1958-12-11 | Dr Gerhard Fricke | Method and device for generating a high vacuum |
-
0
- NL NL251846D patent/NL251846A/xx unknown
-
1959
- 1959-05-25 US US815351A patent/US3107044A/en not_active Expired - Lifetime
-
1960
- 1960-05-06 DE DEC7199U patent/DE1845497U/en not_active Expired
- 1960-05-25 GB GB18431/60A patent/GB897599A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB897599A (en) | 1962-05-30 |
| DE1845497U (en) | 1962-01-25 |
| US3107044A (en) | 1963-10-15 |