FR554599A - Improvements made to electrical switches - Google Patents

Improvements made to electrical switches

Info

Publication number
FR554599A
FR554599A FR554599DA FR554599A FR 554599 A FR554599 A FR 554599A FR 554599D A FR554599D A FR 554599DA FR 554599 A FR554599 A FR 554599A
Authority
FR
France
Prior art keywords
improvements made
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
Application number
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR554599A publication Critical patent/FR554599A/en
Expired legal-status Critical Current

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
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/55—Oil reservoirs or tanks; Lowering means therefor
FR554599D 1921-08-15 1922-07-31 Improvements made to electrical switches Expired FR554599A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US492612A US1648684A (en) 1921-08-15 1921-08-15 Electric switch

Publications (1)

Publication Number Publication Date
FR554599A true FR554599A (en) 1923-06-13

Family

ID=10322440

Family Applications (1)

Application Number Title Priority Date Filing Date
FR554599D Expired FR554599A (en) 1921-08-15 1922-07-31 Improvements made to electrical switches

Country Status (3)

Country Link
US (1) US1648684A (en)
FR (1) FR554599A (en)
GB (1) GB193490A (en)

Also Published As

Publication number Publication date
US1648684A (en) 1927-11-08
GB193490A (en) 1923-02-23

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