FR870467A - Dispositif supprimant le queusot des lampes et tubes a incandescence, et enveloppes analogues - Google Patents
Dispositif supprimant le queusot des lampes et tubes a incandescence, et enveloppes analoguesInfo
- Publication number
- FR870467A FR870467A FR870467DA FR870467A FR 870467 A FR870467 A FR 870467A FR 870467D A FR870467D A FR 870467DA FR 870467 A FR870467 A FR 870467A
- Authority
- FR
- France
- Prior art keywords
- tail
- tubes
- incandescent lamps
- device eliminating
- eliminating
- 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
- 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
- H01J9/40—Closing vessels
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US321634A US2269840A (en) | 1940-03-01 | 1940-03-01 | Tipless exhaust |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR870467A true FR870467A (fr) | 1942-03-12 |
Family
ID=23251364
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR870467D Expired FR870467A (fr) | 1940-03-01 | 1941-02-28 | Dispositif supprimant le queusot des lampes et tubes a incandescence, et enveloppes analogues |
| FR938745D Expired FR938745A (fr) | 1940-03-01 | 1946-11-07 | Perfectionnements aux dispositifs électriques à vide |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR938745D Expired FR938745A (fr) | 1940-03-01 | 1946-11-07 | Perfectionnements aux dispositifs électriques à vide |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2269840A (fr) |
| FR (2) | FR870467A (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE457265A (fr) * | 1943-08-18 | |||
| US2558357A (en) * | 1946-09-20 | 1951-06-26 | Rca Corp | Lead for electron discharge devices |
| US2556059A (en) * | 1949-06-21 | 1951-06-05 | Tung Sol Lamp Works Inc | Electric incandescent lamp and method of manufacturing |
| US2582684A (en) * | 1949-07-12 | 1952-01-15 | Eitel Mccullough Inc | Electron tube structure |
| US2692298A (en) * | 1952-04-29 | 1954-10-19 | Westinghouse Electric Corp | Tubulation and lead-in construction |
-
1940
- 1940-03-01 US US321634A patent/US2269840A/en not_active Expired - Lifetime
-
1941
- 1941-02-28 FR FR870467D patent/FR870467A/fr not_active Expired
-
1946
- 1946-11-07 FR FR938745D patent/FR938745A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2269840A (en) | 1942-01-13 |
| FR938745A (fr) | 1948-10-22 |
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