FR39137E - Switch enhancements - Google Patents

Switch enhancements

Info

Publication number
FR39137E
FR39137E FR39137DA FR39137E FR 39137 E FR39137 E FR 39137E FR 39137D A FR39137D A FR 39137DA FR 39137 E FR39137 E FR 39137E
Authority
FR
France
Prior art keywords
enhancements
switch
switch enhancements
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 US612452A external-priority patent/US1535807A/en
Priority claimed from US397124A external-priority patent/US1785575A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR39137E publication Critical patent/FR39137E/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
    • H01H9/0005—Tap change devices
    • H01H9/0016—Contact arrangements for tap changers
FR39137D 1923-01-13 1930-10-01 Switch enhancements Expired FR39137E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US612452A US1535807A (en) 1923-01-13 1923-01-13 Switch
US397124A US1785575A (en) 1929-10-03 1929-10-03 Ratio-adjusting switch

Publications (1)

Publication Number Publication Date
FR39137E true FR39137E (en) 1931-09-30

Family

ID=27015756

Family Applications (1)

Application Number Title Priority Date Filing Date
FR39137D Expired FR39137E (en) 1923-01-13 1930-10-01 Switch enhancements

Country Status (1)

Country Link
FR (1) FR39137E (en)

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