FR622723A - Perfectionnements aux appareils piézoélectriques - Google Patents

Perfectionnements aux appareils piézoélectriques

Info

Publication number
FR622723A
FR622723A FR622723DA FR622723A FR 622723 A FR622723 A FR 622723A FR 622723D A FR622723D A FR 622723DA FR 622723 A FR622723 A FR 622723A
Authority
FR
France
Prior art keywords
piezoelectric devices
piezoelectric
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
English (en)
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 FR622723A publication Critical patent/FR622723A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
    • H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
FR622723D 1925-07-14 1926-07-13 Perfectionnements aux appareils piézoélectriques Expired FR622723A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US43627A US1688694A (en) 1925-07-14 1925-07-14 Piezo-electric device

Publications (1)

Publication Number Publication Date
FR622723A true FR622723A (fr) 1927-06-04

Family

ID=21928094

Family Applications (1)

Application Number Title Priority Date Filing Date
FR622723D Expired FR622723A (fr) 1925-07-14 1926-07-13 Perfectionnements aux appareils piézoélectriques

Country Status (3)

Country Link
US (1) US1688694A (fr)
DE (1) DE441628C (fr)
FR (1) FR622723A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452571A (en) * 1933-06-14 1948-11-02 Submarine Signal Co Sound signaling apparatus
US2440904A (en) * 1944-01-19 1948-05-04 Brush Dev Co Piezoelectric unit and method of making same

Also Published As

Publication number Publication date
DE441628C (de) 1927-03-11
US1688694A (en) 1928-10-23

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