FR594032A - Improvements to receivers, telephone transmitters, electrical relays and the like - Google Patents

Improvements to receivers, telephone transmitters, electrical relays and the like

Info

Publication number
FR594032A
FR594032A FR594032DA FR594032A FR 594032 A FR594032 A FR 594032A FR 594032D A FR594032D A FR 594032DA FR 594032 A FR594032 A FR 594032A
Authority
FR
France
Prior art keywords
receivers
electrical relays
telephone transmitters
transmitters
telephone
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)
Inventor
Albert-Marie Marquer
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 filed Critical
Application granted granted Critical
Publication of FR594032A publication Critical patent/FR594032A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/12—Non-planar diaphragms or cones
    • H04R7/14—Non-planar diaphragms or cones corrugated, pleated or ribbed

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Multimedia (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Headphones And Earphones (AREA)
FR594032D 1927-05-24 1924-05-08 Improvements to receivers, telephone transmitters, electrical relays and the like Expired FR594032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR33602T 1927-05-24

Publications (1)

Publication Number Publication Date
FR594032A true FR594032A (en) 1925-09-04

Family

ID=8671232

Family Applications (3)

Application Number Title Priority Date Filing Date
FR34464D Expired FR34464E (en) 1927-05-24
FR594032D Expired FR594032A (en) 1927-05-24 1924-05-08 Improvements to receivers, telephone transmitters, electrical relays and the like
FR33602D Expired FR33602E (en) 1927-05-24 1927-05-24 Improvements to receivers, telephone transmitters, electrical relays and the like

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR34464D Expired FR34464E (en) 1927-05-24

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR33602D Expired FR33602E (en) 1927-05-24 1927-05-24 Improvements to receivers, telephone transmitters, electrical relays and the like

Country Status (2)

Country Link
FR (3) FR594032A (en)
GB (1) GB233684A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058274A1 (en) * 2000-11-23 2002-05-29 Alfa Laval Flow Gmbh Membrane is provided with a surface structure formed by two families of crossing grooves or beads oriented at angles within a specified range to the radii drawn through the respective crossing points

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10058274A1 (en) * 2000-11-23 2002-05-29 Alfa Laval Flow Gmbh Membrane is provided with a surface structure formed by two families of crossing grooves or beads oriented at angles within a specified range to the radii drawn through the respective crossing points

Also Published As

Publication number Publication date
FR33602E (en) 1928-11-29
GB233684A (en) 1926-04-01
FR34464E (en) 1929-06-19

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