NL4057C - - Google Patents

Info

Publication number: NL4057C
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.)

1916-09-15

Publication of NL4057C publication Critical patent/NL4057C/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
- 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)
Connector Housings Or Holding Contact Members (AREA)
Resistance Heating (AREA)

NL4057D 1916-09-15 NL4057C (,)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL109797X		1916-09-15

Publications (1)

Publication Number	Publication Date
NL4057C true NL4057C (,)

Family

ID=32294124

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL4057D NL4057C (,)	1916-09-15

Country Status (4)

Country	Link
DE (1)	DE310385C (,)
FR (1)	FR487624A (,)
GB (1)	GB109797A (,)
NL (1)	NL4057C (,)

0
- NL NL4057D patent/NL4057C/xx active
- DE DENDAT310385D patent/DE310385C/de active Active
1917
- 1917-08-18 GB GB11867/17A patent/GB109797A/en not_active Expired
- 1917-09-14 FR FR487624A patent/FR487624A/fr not_active Expired

Also Published As

Publication number	Publication date
FR487624A (fr)	1918-07-17
DE310385C (,)
GB109797A (en)	1917-10-25

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