NL20912C - - Google Patents

Info

Publication number: NL20912C
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.)

1925-06-11

Publication of NL20912C publication Critical patent/NL20912C/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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands

Landscapes

Engineering & Computer Science (AREA)
Multimedia (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)

NL20912D 1925-06-11 NL20912C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US36563A US1630011A (en)	1925-06-11	1925-06-11	Loud speaker

Publications (1)

Publication Number	Publication Date
NL20912C true NL20912C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=21889291

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL20912D NL20912C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)	1925-06-11

Country Status (6)

Country	Link
US (1)	US1630011A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1)	BE334368A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1)	DE509370C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1)	FR616419A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1)	GB253486A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1)	NL20912C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US6510919B1 (en)	2000-08-30	2003-01-28	Awi Licensing Company	Facing system for a flat panel radiator

0
- BE BE334368D patent/BE334368A/xx unknown
- NL NL20912D patent/NL20912C/xx active
1925
- 1925-06-11 US US36563A patent/US1630011A/en not_active Expired - Lifetime
1926
- 1926-04-13 GB GB9727/26A patent/GB253486A/en not_active Expired
- 1926-05-20 FR FR616419D patent/FR616419A/fr not_active Expired
- 1926-05-29 DE DEH106732D patent/DE509370C/de not_active Expired

Also Published As

Publication number	Publication date
FR616419A (fr)	1927-02-02
GB253486A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)	1927-07-13
BE334368A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE509370C (de)	1930-10-08
US1630011A (en)	1927-05-24

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