FR702225A - Expansion switch - Google Patents
Expansion switchInfo
- Publication number
- FR702225A FR702225A FR702225DA FR702225A FR 702225 A FR702225 A FR 702225A FR 702225D A FR702225D A FR 702225DA FR 702225 A FR702225 A FR 702225A
- Authority
- FR
- France
- Prior art keywords
- expansion switch
- expansion
- switch
- 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
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/04—Means for extinguishing or preventing arc between current-carrying parts
- H01H33/16—Impedances connected with contacts
- H01H33/161—Variable impedances
- H01H33/162—Liquid resistors
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE356468X | 1929-11-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR702225A true FR702225A (en) | 1931-04-02 |
Family
ID=6290283
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR702225D Expired FR702225A (en) | 1929-11-22 | 1930-09-05 | Expansion switch |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE373239A (en) |
FR (1) | FR702225A (en) |
GB (1) | GB356468A (en) |
NL (1) | NL32441C (en) |
-
0
- BE BE373239D patent/BE373239A/xx unknown
- NL NL32441D patent/NL32441C/xx active
-
1930
- 1930-09-02 GB GB26200/30A patent/GB356468A/en not_active Expired
- 1930-09-05 FR FR702225D patent/FR702225A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL32441C (en) | |
BE373239A (en) | |
GB356468A (en) | 1931-09-10 |
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