FR22243E - Improvements in telephone construction - Google Patents

Improvements in telephone construction

Info

Publication number
FR22243E
FR22243E FR22243A FR22243DA FR22243E FR 22243 E FR22243 E FR 22243E FR 22243 A FR22243 A FR 22243A FR 22243D A FR22243D A FR 22243DA FR 22243 E FR22243 E FR 22243E
Authority
FR
France
Prior art keywords
telephone construction
telephone
construction
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
FR22243A
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
Priority claimed from GB5458/16A external-priority patent/GB100281A/en
Application filed by Societe Francaise Radio Electrique filed Critical Societe Francaise Radio Electrique
Application granted granted Critical
Publication of FR22243E publication Critical patent/FR22243E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1623—Supply circuits using tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L15/00—Apparatus or local circuits for transmitting or receiving dot-and-dash codes, e.g. Morse code
    • H04L15/24—Apparatus or circuits at the receiving end
    • H04L15/28—Code reproducing apparatus
    • H04L15/285—Telegraph sounders; Apparatus for acoustic reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephone Set Structure (AREA)
FR22243A 1914-12-28 1916-10-30 Improvements in telephone construction Expired FR22243E (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR100281X 1914-12-28
FR100282X 1915-03-01
FR111475T 1915-03-01
GB5458/16A GB100281A (en) 1914-12-28 1916-04-13 Improvements in and relating to Telephone Receivers.
FR22752T 1916-12-07

Publications (1)

Publication Number Publication Date
FR22243E true FR22243E (en) 1921-05-24

Family

ID=32777259

Family Applications (7)

Application Number Title Priority Date Filing Date
FR20801A Expired FR20801E (en) 1914-12-28 Improvements in telephone construction
FR20804A Expired FR20804E (en) 1914-12-28 Improvements in telephone construction
FR20803A Expired FR20803E (en) 1914-12-28 Improvements in telephone construction
FR488190A Expired FR488190A (en) 1914-12-28 1914-12-28 Improvements in telephone construction
FR22212A Expired FR22212E (en) 1914-12-28 1916-07-29 Improvements in telephone construction
FR22243A Expired FR22243E (en) 1914-12-28 1916-10-30 Improvements in telephone construction
FR22752A Expired FR22752E (en) 1914-12-28 1916-12-07 Improvements in telephone construction

Family Applications Before (5)

Application Number Title Priority Date Filing Date
FR20801A Expired FR20801E (en) 1914-12-28 Improvements in telephone construction
FR20804A Expired FR20804E (en) 1914-12-28 Improvements in telephone construction
FR20803A Expired FR20803E (en) 1914-12-28 Improvements in telephone construction
FR488190A Expired FR488190A (en) 1914-12-28 1914-12-28 Improvements in telephone construction
FR22212A Expired FR22212E (en) 1914-12-28 1916-07-29 Improvements in telephone construction

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR22752A Expired FR22752E (en) 1914-12-28 1916-12-07 Improvements in telephone construction

Country Status (2)

Country Link
FR (7) FR488190A (en)
GB (4) GB100282A (en)

Also Published As

Publication number Publication date
FR22212E (en) 1921-05-24
FR22752E (en) 1921-08-23
GB100283A (en)
FR20801E (en) 1919-07-22
FR20804E (en) 1919-07-22
GB111475A (en) 1918-02-14
GB112433A (en) 1918-07-18
FR20803E (en) 1919-07-22
FR488190A (en) 1918-09-10
GB100282A (en) 1917-06-07

Similar Documents

Publication Publication Date Title
FR20801E (en) Improvements in telephone construction
FR476872A (en) Improvements in telephone transmissions
CH68567A (en) Further training in telephone networks
CH68568A (en) Further training in telephone networks
FR477449A (en) Improvements in underwater telegraphy
FR529539A (en) Improvements in scleroscopes
FR476280A (en) Improvements in locknuts
ES58640A1 (en) Improvements in telephony.
FR479372A (en) Improvements in Coke Manufacturing
FR470215A (en) Improvements in carburetors
FR479448A (en) Improvements in carburetors
FR479795A (en) Improvements in carburetors
FR521357A (en) Improvements in carburetors
FR476007A (en) Improvements in siphons
FI5732A (en) Telephone telephony
FR478687A (en) Improvements in pipes
FR477584A (en) Improvements in ties
FR479177A (en) Improvements in telegraph circuits
FR478789A (en) Improvements in garters
FR457430A (en) Improvements in telephone sets
FR476867A (en) Improvements in bearings
FR482973A (en) Improvement in the taxation of telephone conversations
FR467480A (en) Improvements in military telephony
FI6040A (en) Telephone call
FR476715A (en) Improvements in the construction of partitions