NL71838C - - Google Patents
Info
- Publication number
- NL71838C NL71838C NL71838DA NL71838C NL 71838 C NL71838 C NL 71838C NL 71838D A NL71838D A NL 71838DA NL 71838 C NL71838 C NL 71838C
- Authority
- NL
- Netherlands
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)
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR234237X | 1942-01-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL71838C true NL71838C (fr) |
Family
ID=8882671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL71838D NL71838C (fr) | 1942-01-15 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US2473900A (fr) |
| BE (1) | BE448724A (fr) |
| CH (1) | CH234237A (fr) |
| DE (1) | DE891427C (fr) |
| FR (1) | FR963794A (fr) |
| GB (1) | GB610535A (fr) |
| NL (1) | NL71838C (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3321662A (en) * | 1962-07-02 | 1967-05-23 | Sylvania Electric Prod | Electric lamp with tubular body and light transmitting closure having over-lapping flange seal |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE409799C (de) * | 1923-04-22 | 1925-02-12 | Internat Western Electric Comp | Verfahren zur Herstellung stark Elektronen aussendender UEberzuege von Erdalkalioxyden bei Gluehkathoden |
| DE605855C (de) * | 1928-04-05 | 1934-11-19 | Bernhard Loewe Dr | Verfahren zur Herstellung von Material fuer Hochemissionskathoden |
| US2007920A (en) * | 1931-12-07 | 1935-07-09 | Sirian Lamp Co | Short wave length electric lamp |
| US2275886A (en) * | 1941-04-30 | 1942-03-10 | Gen Electric | Process of activating cathodes |
| US2290208A (en) * | 1941-09-26 | 1942-07-21 | Eugene A Quarrie | Process for the manufacture of gaseous discharge lamps |
-
0
- NL NL71838D patent/NL71838C/xx active
- BE BE448724D patent/BE448724A/xx unknown
- FR FR963794D patent/FR963794A/fr not_active Expired
-
1942
- 1942-05-09 DE DES18481D patent/DE891427C/de not_active Expired
-
1943
- 1943-01-08 CH CH234237D patent/CH234237A/fr unknown
-
1945
- 1945-10-22 GB GB27793/45A patent/GB610535A/en not_active Expired
-
1947
- 1947-07-08 US US759590A patent/US2473900A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2473900A (en) | 1949-06-21 |
| GB610535A (en) | 1948-10-18 |
| BE448724A (fr) | |
| DE891427C (de) | 1953-09-28 |
| CH234237A (fr) | 1944-09-15 |
| FR963794A (fr) | 1950-07-20 |