FR743873A - - Google Patents
Info
- Publication number
- FR743873A FR743873A FR743873DA FR743873A FR 743873 A FR743873 A FR 743873A FR 743873D A FR743873D A FR 743873DA FR 743873 A FR743873 A FR 743873A
- 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
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/38—Cold-cathode tubes
- H01J17/40—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes
- H01J17/44—Cold-cathode tubes with one cathode and one anode, e.g. glow tubes, tuning-indicator glow tubes, voltage-stabiliser tubes, voltage-indicator tubes having one or more control electrodes
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE400410X | 1931-10-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR743873A true FR743873A (enrdf_load_stackoverflow) | 1933-04-07 |
Family
ID=6399871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR743873D Expired FR743873A (enrdf_load_stackoverflow) | 1931-10-20 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1992888A (enrdf_load_stackoverflow) |
| FR (1) | FR743873A (enrdf_load_stackoverflow) |
| GB (1) | GB400410A (enrdf_load_stackoverflow) |
-
0
- FR FR743873D patent/FR743873A/fr not_active Expired
-
1932
- 1932-10-14 GB GB28710/32A patent/GB400410A/en not_active Expired
- 1932-10-17 US US638196A patent/US1992888A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US1992888A (en) | 1935-02-26 |
| GB400410A (en) | 1933-10-26 |