FR743972A - - Google Patents
Info
- Publication number
- FR743972A FR743972A FR743972DA FR743972A FR 743972 A FR743972 A FR 743972A FR 743972D A FR743972D A FR 743972DA FR 743972 A FR743972 A FR 743972A
- Authority
- FR
- France
- 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
- H01J7/00—Details not provided for in the preceding groups and common to two or more basic types of discharge tubes or lamps
- H01J7/14—Means for obtaining or maintaining the desired pressure within the vessel
- H01J7/18—Means for absorbing or adsorbing gas, e.g. by gettering
- H01J7/186—Getter supports
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743972A true FR743972A (en) | 1933-04-08 |
Family
ID=1548149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743972D Expired FR743972A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR743972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750230C (en) * | 1935-10-22 | 1944-12-20 | Rca Corp | Electric discharge tubes with an indirectly heated glow cathode |
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0
- FR FR743972D patent/FR743972A/fr not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750230C (en) * | 1935-10-22 | 1944-12-20 | Rca Corp | Electric discharge tubes with an indirectly heated glow cathode |