NL238974A - - Google Patents
Info
- Publication number
- NL238974A NL238974A NL238974DA NL238974A NL 238974 A NL238974 A NL 238974A NL 238974D A NL238974D A NL 238974DA NL 238974 A NL238974 A NL 238974A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/33—Special shape of cross-section, e.g. for producing cool spot
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/045—Thermic screens or reflectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/10—Shields, screens, or guides for influencing the discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1447358A GB923961A (en) | 1958-05-06 | 1958-05-06 | Improvements relating to electric discharge lamps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL238974A true NL238974A (de) |
Family
ID=10041822
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL113900D NL113900C (de) | 1958-05-06 | ||
| NL238974D NL238974A (de) | 1958-05-06 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL113900D NL113900C (de) | 1958-05-06 |
Country Status (5)
| Country | Link |
|---|---|
| CH (1) | CH374764A (de) |
| DE (1) | DE1211715B (de) |
| ES (1) | ES249153A1 (de) |
| GB (1) | GB923961A (de) |
| NL (2) | NL238974A (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1246653A (en) * | 1984-08-20 | 1988-12-13 | William M. Keeffe | Low wattage metal halide lamp |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE613900C (de) * | 1933-06-27 | 1935-05-28 | Patra Patent Treuhand | Doppelwandige elektrische Leuchtroehre |
| DE616073C (de) * | 1933-06-27 | 1935-07-19 | Patra Patent Treuhand | Doppelwandige, elektrische Leuchtroehre |
| GB456531A (en) * | 1935-05-10 | 1936-11-10 | Gen Electric Co Ltd | Improvements in electric discharge devices |
| US2135480A (en) * | 1936-08-26 | 1938-11-08 | Birdseye Electric Company | Reflecting glow lamp |
| FR861799A (fr) * | 1938-11-26 | 1941-02-17 | Lampes Sa | Perfectionnements aux dispositifs à décharge lumineuse |
| AT196504B (de) * | 1954-12-14 | 1958-03-25 | Gen Electric | Entladungslampe |
| FR1118195A (fr) * | 1955-01-24 | 1956-06-01 | Tachymètre différentiel | |
| DE1736195U (de) * | 1955-10-18 | 1956-12-20 | Philips Nv | Elektrische entladungsroehre. |
-
0
- NL NL113900D patent/NL113900C/xx active
- NL NL238974D patent/NL238974A/xx unknown
-
1958
- 1958-05-06 GB GB1447358A patent/GB923961A/en not_active Expired
-
1959
- 1959-05-05 CH CH7289459A patent/CH374764A/de unknown
- 1959-05-05 ES ES0249153A patent/ES249153A1/es not_active Expired
- 1959-05-06 DE DEA31986A patent/DE1211715B/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CH374764A (de) | 1964-01-31 |
| ES249153A1 (es) | 1959-10-01 |
| NL113900C (de) | |
| DE1211715B (de) | 1966-03-03 |
| GB923961A (en) | 1963-04-18 |