GB421853A - Improvements in or relating to electric discharge devices - Google Patents
Improvements in or relating to electric discharge devicesInfo
- Publication number
- GB421853A GB421853A GB3175233A GB3175233A GB421853A GB 421853 A GB421853 A GB 421853A GB 3175233 A GB3175233 A GB 3175233A GB 3175233 A GB3175233 A GB 3175233A GB 421853 A GB421853 A GB 421853A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cap
- protuberance
- envelope
- valve
- glass
- 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
- 239000011521 glass Substances 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000007373 indentation Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
- H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
- H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
Landscapes
- Spark Plugs (AREA)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE406091D BE406091A (enrdf_load_stackoverflow) | 1933-11-14 | ||
GB3175233A GB421853A (en) | 1933-11-14 | 1933-11-14 | Improvements in or relating to electric discharge devices |
FR781000D FR781000A (fr) | 1933-11-14 | 1934-11-09 | Perfectionnements aux dispositifs à décharge électrique |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3175233A GB421853A (en) | 1933-11-14 | 1933-11-14 | Improvements in or relating to electric discharge devices |
Publications (1)
Publication Number | Publication Date |
---|---|
GB421853A true GB421853A (en) | 1935-01-01 |
Family
ID=10327858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3175233A Expired GB421853A (en) | 1933-11-14 | 1933-11-14 | Improvements in or relating to electric discharge devices |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE406091A (enrdf_load_stackoverflow) |
FR (1) | FR781000A (enrdf_load_stackoverflow) |
GB (1) | GB421853A (enrdf_load_stackoverflow) |
-
0
- BE BE406091D patent/BE406091A/xx unknown
-
1933
- 1933-11-14 GB GB3175233A patent/GB421853A/en not_active Expired
-
1934
- 1934-11-09 FR FR781000D patent/FR781000A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE406091A (enrdf_load_stackoverflow) | |
FR781000A (fr) | 1935-05-07 |
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