NL21240C - - Google Patents

Info

Publication number: NL21240C
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.)

1927-01-26

Publication of NL21240C publication Critical patent/NL21240C/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)
Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)

NL21240D 1927-01-26 NL21240C (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB233227A GB286841A (en)	1927-01-26	1927-01-26	Improvements in or relating to the attachment of diaphragms or oscillation members for loud-speakers

Publications (1)

Publication Number	Publication Date
NL21240C true NL21240C (xx)

Family

ID=9737673

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL21240D NL21240C (xx)	1927-01-26

Country Status (4)

Country	Link
BE (1)	BE345857A (xx)
FR (1)	FR643063A (xx)
GB (1)	GB286841A (xx)
NL (1)	NL21240C (xx)

0
- BE BE345857D patent/BE345857A/xx unknown
- NL NL21240D patent/NL21240C/xx active
1927
- 1927-01-26 GB GB233227A patent/GB286841A/en not_active Expired
- 1927-10-27 FR FR643063D patent/FR643063A/fr not_active Expired

Also Published As

Publication number	Publication date
GB286841A (en)	1928-03-15
FR643063A (fr)	1928-09-10
BE345857A (xx)

Publication	Publication Date	Title
FR34966E (xx)	1929-10-30
FR34837E (xx)	1927-10-21
FR34849E (xx)	1927-10-21
FR34802E (xx)	1927-10-21
FR616005A (xx)	1927-01-21
FR34783E (xx)	1927-10-21
FR34787E (xx)	1927-10-21
FR34887E (xx)	1927-10-22
BE345857A (xx)
NL37515C (xx)
BE351489A (xx)
BE351312A (xx)
BE344886A (xx)
BE350792A (xx)
BE344470A (xx)
BE343858A (xx)
BE343072A (xx)
BE340166A (xx)
BE303375A (xx)
BE343797A (xx)
BE350608A (xx)
BE347291A (xx)
BE353290A (xx)
BE351881A (xx)
BE353656A (xx)