CH104444A - Appareil téléphonique. - Google Patents

Appareil téléphonique.

Info

Publication number: CH104444A
Authority: CH; Switzerland
Prior art keywords: telephone device; telephone
Prior art date: 1922-06-26

Application number

Other languages

English (en)

Inventor

Schmidt Lambert

Original Assignee

Schmidt Lambert

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.)

1922-06-26

Filing date

1922-11-15

Publication date

1924-05-01

1922-11-15 Application filed by Schmidt Lambert filed Critical Schmidt Lambert

1924-05-01 Publication of CH104444A publication Critical patent/CH104444A/fr

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

Physics & Mathematics (AREA)
Electromagnetism (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electromagnets (AREA)
Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

CH104444D 1922-06-26 1922-11-15 Appareil téléphonique. CH104444A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US57086922 US1452850A (en)	1922-06-26	1922-06-26	of brooklyn

Publications (1)

Publication Number	Publication Date
CH104444A true CH104444A (fr)	1924-05-01

Family

ID=10308531

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH104444D CH104444A (fr)	1922-06-26	1922-11-15	Appareil téléphonique.

Country Status (6)

Country	Link
US (1)	US1452850A (fr)
CH (1)	CH104444A (fr)
DE (1)	DE399753C (fr)
FR (1)	FR558788A (fr)
GB (1)	GB208330A (fr)
NL (1)	NL13437C (fr)

1922
- 1922-06-26 US US57086922 patent/US1452850A/en not_active Expired - Lifetime
- 1922-10-07 DE DESCH66063D patent/DE399753C/de not_active Expired
- 1922-11-07 GB GB30493/22A patent/GB208330A/en not_active Expired
- 1922-11-14 NL NL23204A patent/NL13437C/xx active
- 1922-11-15 CH CH104444D patent/CH104444A/fr unknown
- 1922-11-17 FR FR558788D patent/FR558788A/fr not_active Expired

Also Published As

Publication number	Publication date
US1452850A (en)	1923-04-24
GB208330A (en)	1923-12-20
NL13437C (fr)	1925-08-15
DE399753C (de)	1924-07-29
FR558788A (fr)	1923-09-03

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