NL4057C - - Google Patents
Info
Publication number
NL4057C
NL4057C
NL4057DA
NL4057C
NL 4057 C
NL4057 C
NL 4057C
NL 4057D A
NL4057D A
NL 4057DA
NL 4057 C
NL4057 C
NL 4057C
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
Links
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 )
Resistance Heating
(AREA )
Connector Housings Or Holding Contact Members
(AREA )
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL109797X
1916-09-15
Publications (1)
Publication Number
Publication Date
NL4057C
true
NL4057C
(d )
Family
ID=32294124
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
NL4057D
NL4057C
(d )
1916-09-15
Country Status (4)