FR994902A - Improvements to electric filters - Google Patents

Improvements to electric filters

Info

Publication number
FR994902A
FR994902A FR994902DA FR994902A FR 994902 A FR994902 A FR 994902A FR 994902D A FR994902D A FR 994902DA FR 994902 A FR994902 A FR 994902A
Authority
FR
France
Prior art keywords
electric filters
filters
electric
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.)
Societe Francaise Radio Electrique
Original Assignee
Societe Francaise Radio Electrique
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 Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR994902A publication Critical patent/FR994902A/en
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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Filters And Equalizers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
FR994902D 1945-02-17 1945-02-17 Improvements to electric filters Expired FR994902A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR994902T 1945-02-17

Publications (1)

Publication Number Publication Date
FR994902A true FR994902A (en) 1951-11-23

Family

ID=9556754

Family Applications (1)

Application Number Title Priority Date Filing Date
FR994902D Expired FR994902A (en) 1945-02-17 1945-02-17 Improvements to electric filters

Country Status (4)

Country Link
BE (1) BE463000A (en)
CH (1) CH252008A (en)
FR (1) FR994902A (en)
GB (1) GB617974A (en)

Also Published As

Publication number Publication date
CH252008A (en) 1947-11-30
GB617974A (en) 1949-02-15
BE463000A (en)

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