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 (xx)

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 (xx)

Family

ID=21889291

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL20912D NL20912C (xx)	1925-06-11

Country Status (6)

Country	Link
US (1)	US1630011A (xx)
BE (1)	BE334368A (xx)
DE (1)	DE509370C (xx)
FR (1)	FR616419A (xx)
GB (1)	GB253486A (xx)
NL (1)	NL20912C (xx)

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
DE509370C (de)	1930-10-08
GB253486A (xx)	1927-07-13
BE334368A (xx)
FR616419A (fr)	1927-02-02
US1630011A (en)	1927-05-24

Publication	Publication Date	Title
AT108862B (xx)	1928-02-10
FR587965A (xx)	1925-04-28
AT107490B (xx)	1927-10-10
AT108860B (xx)	1928-02-10
FR590666A (xx)	1925-06-20
AT108642B (xx)	1928-01-25
AT108056B (xx)	1927-11-25
AT108864B (xx)	1928-02-10
AT108975B (xx)	1928-02-25
AT99321B (xx)	1925-02-25
FR595062A (xx)	1925-09-25
BE325119A (xx)	1925-06-19
BE331135A (xx)	1925-12-31
BE330611A (xx)	1925-12-31
BE329122A (xx)	1925-10-15
BE330822A (xx)
BE331504A (xx)
BE331749A (xx)
BE334368A (xx)
BE331755A (xx)
BE328518A (xx)
BE249130A (xx)
BE248750A (xx)
BE268047A (xx)
BE247555A (xx)