FR861907A - Improvements to electrical switches - Google Patents
Improvements to electrical switchesInfo
- Publication number
- FR861907A FR861907A FR861907DA FR861907A FR 861907 A FR861907 A FR 861907A FR 861907D A FR861907D A FR 861907DA FR 861907 A FR861907 A FR 861907A
- Authority
- FR
- France
- Prior art keywords
- electrical switches
- switches
- electrical
- 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
- H01H29/00—Switches having at least one liquid contact
- H01H29/30—Switches having at least one liquid contact with level of surface of contact liquid displaced by expansion or evaporation thereof
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US241383A US2258736A (en) | 1938-11-19 | 1938-11-19 | Mercury interrupter |
Publications (1)
Publication Number | Publication Date |
---|---|
FR861907A true FR861907A (en) | 1941-02-21 |
Family
ID=22910490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR861907D Expired FR861907A (en) | 1938-11-19 | 1939-11-27 | Improvements to electrical switches |
Country Status (3)
Country | Link |
---|---|
US (1) | US2258736A (en) |
FR (1) | FR861907A (en) |
GB (1) | GB533691A (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677736A (en) * | 1952-03-29 | 1954-05-04 | James A Ryles | Pulse generator |
DE1038640B (en) * | 1956-09-29 | 1958-09-11 | Siemens Ag | Self-regenerating evaporation protection |
-
1938
- 1938-11-19 US US241383A patent/US2258736A/en not_active Expired - Lifetime
-
1939
- 1939-11-15 GB GB30111/39A patent/GB533691A/en not_active Expired
- 1939-11-27 FR FR861907D patent/FR861907A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB533691A (en) | 1941-02-18 |
US2258736A (en) | 1941-10-14 |
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