NL256350A - - Google Patents
Info
- Publication number
- NL256350A NL256350A NL256350DA NL256350A NL 256350 A NL256350 A NL 256350A NL 256350D A NL256350D A NL 256350DA NL 256350 A NL256350 A NL 256350A
- 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
- H01J41/14—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of thermionic cathodes
- H01J41/16—Discharge tubes for evacuating by diffusion of ions, e.g. ion pumps, getter ion pumps with ionisation by means of thermionic cathodes using gettering substances
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US847033A US3037685A (en) | 1959-10-16 | 1959-10-16 | Method for pumping gases at low vacuum pressures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL256350A true NL256350A (en:Method) |
Family
ID=25299592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL256350D NL256350A (en:Method) | 1959-10-16 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3037685A (en:Method) |
| BE (1) | BE595989A (en:Method) |
| DE (1) | DE1252353B (en:Method) |
| NL (1) | NL256350A (en:Method) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3214245A (en) * | 1962-10-29 | 1965-10-26 | Gen Electric | Reactive metal diffusion pump |
| US3338676A (en) * | 1964-01-03 | 1967-08-29 | Nat Lead Co | Preparation of a titania hydrate |
| US3515171A (en) * | 1968-07-23 | 1970-06-02 | Sloan Instr Corp | Side pumped vacuum collar |
-
0
- NL NL256350D patent/NL256350A/xx unknown
- DE DENDAT1252353D patent/DE1252353B/de active Pending
-
1959
- 1959-10-16 US US847033A patent/US3037685A/en not_active Expired - Lifetime
-
1960
- 1960-10-13 BE BE595989A patent/BE595989A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE1252353B (de) | 1967-10-19 |
| BE595989A (fr) | 1961-02-01 |
| US3037685A (en) | 1962-06-05 |