FR749017A - Improvements to electric resonance devices - Google Patents

Improvements to electric resonance devices

Info

Publication number
FR749017A
FR749017A FR749017DA FR749017A FR 749017 A FR749017 A FR 749017A FR 749017D A FR749017D A FR 749017DA FR 749017 A FR749017 A FR 749017A
Authority
FR
France
Prior art keywords
electric resonance
resonance devices
devices
electric
resonance
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger 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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Application granted granted Critical
Publication of FR749017A publication Critical patent/FR749017A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/30—Electromagnetic relays specially adapted for actuation by ac
    • H01H51/32—Frequency relays; Mechanically-tuned relays
FR749017D 1933-01-13 1933-01-13 Improvements to electric resonance devices Expired FR749017A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR647953X 1933-01-13

Publications (1)

Publication Number Publication Date
FR749017A true FR749017A (en) 1933-07-17

Family

ID=9002374

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749017D Expired FR749017A (en) 1933-01-13 1933-01-13 Improvements to electric resonance devices

Country Status (5)

Country Link
BE (1) BE400588A (en)
DE (1) DE647953C (en)
FR (1) FR749017A (en)
GB (1) GB419634A (en)
NL (1) NL38748C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE892631C (en) * 1939-05-28 1953-10-08 Hartmann & Braun Ag Interference-insensitive electrical frequency meter, especially for low frequencies
BE544673A (en) * 1955-04-13

Also Published As

Publication number Publication date
NL38748C (en)
DE647953C (en) 1937-07-17
GB419634A (en) 1934-11-15
BE400588A (en)

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