NL27519C - - Google Patents

Info

Publication number: NL27519C
Authority: NL; Netherlands

Application number

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.)

1924-12-23

Publication of NL27519C publication Critical patent/NL27519C/xx

Classifications

- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- 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
- H04R11/02—Loudspeakers

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Electromagnetism (AREA)
Apparatuses For Generation Of Mechanical Vibrations (AREA)

NL27519D 1924-12-23 NL27519C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
CH116853T		1924-12-23

Publications (1)

Publication Number	Publication Date
NL27519C true NL27519C (enrdf_load_stackoverflow)

Family

ID=4375856

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL27519D NL27519C (enrdf_load_stackoverflow)	1924-12-23

Country Status (2)

Country	Link
CH (1)	CH116853A (enrdf_load_stackoverflow)
NL (1)	NL27519C (enrdf_load_stackoverflow)

0
- NL NL27519D patent/NL27519C/xx active
1924
- 1924-12-23 CH CH116853D patent/CH116853A/fr unknown

Also Published As

Publication number	Publication date
CH116853A (fr)	1926-10-01

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