FR745811A - - Google Patents
Info
- Publication number
- FR745811A FR745811A FR745811DA FR745811A FR 745811 A FR745811 A FR 745811A FR 745811D A FR745811D A FR 745811DA FR 745811 A FR745811 A FR 745811A
- 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
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
- H01J9/042—Manufacture, activation of the emissive part
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Solid Thermionic Cathode (AREA)
- Chemically Coating (AREA)
- Electroplating Methods And Accessories (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Electrolytic Production Of Metals (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE406431X | 1931-11-16 | ||
| DER83352D DE713559C (de) | 1931-11-16 | 1931-11-20 | Verfahren zur Herstellung von Entladungsroehren |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR745811A true FR745811A (me) | 1933-05-17 |
Family
ID=25899978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR745811D Expired FR745811A (me) | 1931-11-16 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE713559C (me) |
| FR (1) | FR745811A (me) |
| GB (2) | GB406431A (me) |
-
0
- FR FR745811D patent/FR745811A/fr not_active Expired
-
1931
- 1931-11-20 DE DER83352D patent/DE713559C/de not_active Expired
-
1932
- 1932-11-14 GB GB32082/32A patent/GB406431A/en not_active Expired
- 1932-11-17 GB GB32464/32A patent/GB409051A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB406431A (en) | 1934-03-01 |
| GB409051A (en) | 1934-04-26 |
| DE713559C (de) | 1941-11-10 |