FR468597A - Manufacturing process of thermal conductors for thermal telephones with metal wires treated by the wollastone process - Google Patents

Manufacturing process of thermal conductors for thermal telephones with metal wires treated by the wollastone process

Info

Publication number
FR468597A
FR468597A FR468597A FR468597DA FR468597A FR 468597 A FR468597 A FR 468597A FR 468597 A FR468597 A FR 468597A FR 468597D A FR468597D A FR 468597DA FR 468597 A FR468597 A FR 468597A
Authority
FR
France
Prior art keywords
thermal
wollastone
telephones
metal wires
manufacturing process
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
FR468597A
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.)
DE NL THERMO TELEPHOON MIJ NV
Original Assignee
DE NL THERMO TELEPHOON MIJ NV
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 DE NL THERMO TELEPHOON MIJ NV filed Critical DE NL THERMO TELEPHOON MIJ NV
Application granted granted Critical
Publication of FR468597A publication Critical patent/FR468597A/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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Resistance Heating (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Wire Processing (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
  • Insulating Bodies (AREA)
FR468597A 1913-05-08 1914-02-18 Manufacturing process of thermal conductors for thermal telephones with metal wires treated by the wollastone process Expired FR468597A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE306014T 1913-05-08
DE309334T 1913-06-03

Publications (1)

Publication Number Publication Date
FR468597A true FR468597A (en) 1914-07-09

Family

ID=32826443

Family Applications (1)

Application Number Title Priority Date Filing Date
FR468597A Expired FR468597A (en) 1913-05-08 1914-02-18 Manufacturing process of thermal conductors for thermal telephones with metal wires treated by the wollastone process

Country Status (4)

Country Link
DE (3) DE306014C (en)
FR (1) FR468597A (en)
GB (3) GB191404203A (en)
NL (2) NL2566C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019059942A1 (en) 2017-09-25 2019-03-28 Faurecia Emissions Control Technologies, Usa, Llc Acoustic volume in hot-end of exhaust systems

Also Published As

Publication number Publication date
GB191404203A (en) 1915-02-11
DE306014C (en)
DE309334C (en)
DE305716C (en)
GB191404184A (en) 1915-02-11
GB191404220A (en) 1915-04-29
NL2566C (en)
NL1896C (en)

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