FR1331853A - Vacuum pumping device - Google Patents
Vacuum pumping deviceInfo
- Publication number
- FR1331853A FR1331853A FR907642A FR907642A FR1331853A FR 1331853 A FR1331853 A FR 1331853A FR 907642 A FR907642 A FR 907642A FR 907642 A FR907642 A FR 907642A FR 1331853 A FR1331853 A FR 1331853A
- Authority
- FR
- France
- Prior art keywords
- pumping device
- vacuum pumping
- vacuum
- pumping
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR907642A FR1331853A (en) | 1961-08-30 | 1962-08-23 | Vacuum pumping device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US135010A US3147910A (en) | 1961-08-30 | 1961-08-30 | Vacuum pump apparatus |
FR907642A FR1331853A (en) | 1961-08-30 | 1962-08-23 | Vacuum pumping device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1331853A true FR1331853A (en) | 1963-07-05 |
Family
ID=26197217
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR907642A Expired FR1331853A (en) | 1961-08-30 | 1962-08-23 | Vacuum pumping device |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1331853A (en) |
-
1962
- 1962-08-23 FR FR907642A patent/FR1331853A/en not_active Expired
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