NL20311C - - Google Patents

Info

Publication number: NL20311C
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.)

1925-11-28

Publication of NL20311C publication Critical patent/NL20311C/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
- 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)
Reciprocating Pumps (AREA)
Reciprocating, Oscillating Or Vibrating Motors (AREA)

NL20311D 1925-11-28 NL20311C (cg-RX-API-DMAC7.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US71990A US1588545A (en)	1925-11-28	1925-11-28	Electromagnetic driver

Publications (1)

Publication Number	Publication Date
NL20311C true NL20311C (cg-RX-API-DMAC7.html)

Family

ID=22104871

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL20311D NL20311C (cg-RX-API-DMAC7.html)	1925-11-28

Country Status (3)

Country	Link
US (1)	US1588545A (cg-RX-API-DMAC7.html)
GB (1)	GB257203A (cg-RX-API-DMAC7.html)
NL (1)	NL20311C (cg-RX-API-DMAC7.html)

0
- NL NL20311D patent/NL20311C/xx active
1925
- 1925-11-28 US US71990A patent/US1588545A/en not_active Expired - Lifetime
1926
- 1926-04-30 GB GB11387/26A patent/GB257203A/en not_active Expired

Also Published As

Publication number	Publication date
US1588545A (en)	1926-06-15
GB257203A (en)	1926-08-26

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