FR694321A - Improvements made to electric lamps, discharge devices, etc., with a view to avoiding the production of arc discharges - Google Patents
Improvements made to electric lamps, discharge devices, etc., with a view to avoiding the production of arc dischargesInfo
- Publication number
- FR694321A FR694321A FR694321DA FR694321A FR 694321 A FR694321 A FR 694321A FR 694321D A FR694321D A FR 694321DA FR 694321 A FR694321 A FR 694321A
- Authority
- FR
- France
- Prior art keywords
- avoiding
- production
- view
- improvements made
- discharge 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
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/60—Means structurally associated with the lamp for indicating defects or previous use
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/26—Screens; Filters
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL694321X | 1929-04-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR694321A true FR694321A (en) | 1930-12-02 |
Family
ID=19808824
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR694321D Expired FR694321A (en) | 1929-04-26 | 1930-04-23 | Improvements made to electric lamps, discharge devices, etc., with a view to avoiding the production of arc discharges |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE369656A (en) |
FR (1) | FR694321A (en) |
NL (1) | NL26007C (en) |
-
0
- BE BE369656D patent/BE369656A/fr unknown
- NL NL26007D patent/NL26007C/xx active
-
1930
- 1930-04-23 FR FR694321D patent/FR694321A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE369656A (en) | |
NL26007C (en) |
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