FR839805A - Improvements to mechanical filters - Google Patents

Improvements to mechanical filters

Info

Publication number
FR839805A
FR839805A FR839805DA FR839805A FR 839805 A FR839805 A FR 839805A FR 839805D A FR839805D A FR 839805DA FR 839805 A FR839805 A FR 839805A
Authority
FR
France
Prior art keywords
mechanical filters
filters
mechanical
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.)
Lignes Telegraphiques et Telephoniques LTT SA
Original Assignee
Lignes Telegraphiques et Telephoniques LTT 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 Lignes Telegraphiques et Telephoniques LTT SA filed Critical Lignes Telegraphiques et Telephoniques LTT SA
Application granted granted Critical
Publication of FR839805A publication Critical patent/FR839805A/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
    • H03H9/48—Coupling means therefor
    • H03H9/50—Mechanical coupling means

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
FR839805D 1937-06-24 1938-06-24 Improvements to mechanical filters Expired FR839805A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE839805X 1937-06-24

Publications (1)

Publication Number Publication Date
FR839805A true FR839805A (en) 1939-04-13

Family

ID=6762030

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839805D Expired FR839805A (en) 1937-06-24 1938-06-24 Improvements to mechanical filters

Country Status (1)

Country Link
FR (1) FR839805A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2615981A (en) * 1949-01-14 1952-10-28 Collins Radio Co Electromechanical filter
US2684724A (en) * 1948-10-01 1954-07-27 Bell Telephone Labor Inc Sound wave refractor
US2717361A (en) * 1951-09-24 1955-09-06 Collins Radio Co Mechanical filters

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2684724A (en) * 1948-10-01 1954-07-27 Bell Telephone Labor Inc Sound wave refractor
US2615981A (en) * 1949-01-14 1952-10-28 Collins Radio Co Electromechanical filter
US2717361A (en) * 1951-09-24 1955-09-06 Collins Radio Co Mechanical filters

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