FR562770A - Improvements to arc devices - Google Patents
Improvements to arc devicesInfo
- Publication number
- FR562770A FR562770A FR562770DA FR562770A FR 562770 A FR562770 A FR 562770A FR 562770D A FR562770D A FR 562770DA FR 562770 A FR562770 A FR 562770A
- Authority
- FR
- France
- Prior art keywords
- arc devices
- arc
- devices
- 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
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/84—Lamps with discharge constricted by high pressure
- H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US540276A US1608267A (en) | 1922-03-01 | 1922-03-01 | Arc device |
Publications (1)
Publication Number | Publication Date |
---|---|
FR562770A true FR562770A (en) | 1923-11-19 |
Family
ID=10083810
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR562770D Expired FR562770A (en) | 1922-03-01 | 1923-02-28 | Improvements to arc devices |
Country Status (3)
Country | Link |
---|---|
US (1) | US1608267A (en) |
FR (1) | FR562770A (en) |
GB (1) | GB191337A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4591721A (en) * | 1984-10-10 | 1986-05-27 | Andors Analyzers Incorporated | Oxygen analysis employing absorption spectroscopy |
-
1922
- 1922-03-01 US US540276A patent/US1608267A/en not_active Expired - Lifetime
- 1922-06-17 GB GB16796/22A patent/GB191337A/en not_active Expired
-
1923
- 1923-02-28 FR FR562770D patent/FR562770A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB191337A (en) | 1923-01-11 |
US1608267A (en) | 1926-11-23 |
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