FR37677E - Improvements made to vacuum devices and more particularly to switches - Google Patents

Improvements made to vacuum devices and more particularly to switches

Info

Publication number
FR37677E
FR37677E FR37677DA FR37677E FR 37677 E FR37677 E FR 37677E FR 37677D A FR37677D A FR 37677DA FR 37677 E FR37677 E FR 37677E
Authority
FR
France
Prior art keywords
switches
improvements made
vacuum devices
vacuum
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
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
Priority claimed from US264115A external-priority patent/US1892538A/en
Priority claimed from US264116A external-priority patent/US1865274A/en
Priority claimed from US264114A external-priority patent/US1814851A/en
Priority claimed from US285412A external-priority patent/US1792340A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR37677E publication Critical patent/FR37677E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
FR37677D 1928-03-23 1929-03-23 Improvements made to vacuum devices and more particularly to switches Expired FR37677E (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US264115A US1892538A (en) 1928-03-23 1928-03-23 Vacuum switch
US264116A US1865274A (en) 1928-03-23 1928-03-23 Circuit interrupter
US264114A US1814851A (en) 1928-03-23 1928-03-23 Circuit controlling apparatus
US285412A US1792340A (en) 1928-06-14 1928-06-14 Circuit interrupter
US28809428A 1928-06-25 1928-06-25
US314352XA 1928-06-25 1928-06-25

Publications (1)

Publication Number Publication Date
FR37677E true FR37677E (en) 1931-01-14

Family

ID=31950927

Family Applications (1)

Application Number Title Priority Date Filing Date
FR37677D Expired FR37677E (en) 1928-03-23 1929-03-23 Improvements made to vacuum devices and more particularly to switches

Country Status (1)

Country Link
FR (1) FR37677E (en)

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