NL28475C - - Google Patents

Info

Publication number: NL28475C
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.)

1928-04-21

Publication of NL28475C publication Critical patent/NL28475C/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
- H04R1/16—Mounting or connecting stylus to transducer with or without damping means
- 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
- H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Electromagnetism (AREA)
Electromagnets (AREA)
Adjustable Resistors (AREA)

NL28475D 1928-04-21 NL28475C (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US271813A US1906615A (en)	1928-04-21	1928-04-21	Electric pick-up

Publications (1)

Publication Number	Publication Date
NL28475C true NL28475C (enrdf_load_html_response)

Family

ID=23037202

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL28475D NL28475C (enrdf_load_html_response)	1928-04-21

Country Status (4)

Country	Link
US (1)	US1906615A (enrdf_load_html_response)
DE (1)	DE613236C (enrdf_load_html_response)
GB (1)	GB310284A (enrdf_load_html_response)
NL (1)	NL28475C (enrdf_load_html_response)

0
- NL NL28475D patent/NL28475C/xx active
1928
- 1928-04-21 US US271813A patent/US1906615A/en not_active Expired - Lifetime
1929
- 1929-04-16 DE DEA57470D patent/DE613236C/de not_active Expired
- 1929-04-22 GB GB12437/29A patent/GB310284A/en not_active Expired

Also Published As

Publication number	Publication date
GB310284A (en)	1930-09-22
DE613236C (de)	1935-05-16
US1906615A (en)	1933-05-02

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