NL17820C - - Google Patents

Info

Publication number: NL17820C
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.)

1925-10-21

Publication of NL17820C publication Critical patent/NL17820C/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
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
- H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
- H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
- 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)
Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Multimedia (AREA)
Diaphragms For Electromechanical Transducers (AREA)
Details Of Audible-Bandwidth Transducers (AREA)

NL17820D 1925-10-21 NL17820C (xx)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL260230X		1925-10-21

Publications (1)

Publication Number	Publication Date
NL17820C true NL17820C (xx)

Family

ID=19781471

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL17820D NL17820C (xx)	1925-10-21

Country Status (5)

Country	Link
US (1)	US1859758A (xx)
BE (1)	BE335671A (xx)
FR (1)	FR619732A (xx)
GB (1)	GB260230A (xx)
NL (1)	NL17820C (xx)

0
- BE BE335671D patent/BE335671A/xx unknown
- NL NL17820D patent/NL17820C/xx active
1926
- 1926-07-31 FR FR619732D patent/FR619732A/fr not_active Expired
- 1926-10-02 GB GB24406/26A patent/GB260230A/en not_active Expired
- 1926-10-20 US US142847A patent/US1859758A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FR619732A (fr)	1927-04-07
US1859758A (en)	1932-05-24
BE335671A (xx)
GB260230A (en)	1927-04-28

Publication	Publication Date	Title
AT108862B (xx)	1928-02-10
FR588302A (xx)	1925-05-05
FR594699A (xx)	1925-09-17
AT108864B (xx)	1928-02-10
AT108975B (xx)	1928-02-25
AT108860B (xx)	1928-02-10
AT108642B (xx)	1928-01-25
AT99321B (xx)	1925-02-25
AT108056B (xx)	1927-11-25
BE329122A (xx)	1925-10-15
BE331135A (xx)	1925-12-31
BE330611A (xx)	1925-12-31
BE325119A (xx)	1925-06-19
SE83632C1 (xx)	1935-06-18
BE331583A (xx)
BE331748A (xx)
BE331749A (xx)
BE247555A (xx)
BE331755A (xx)
BE331756A (xx)
BE331760A (xx)
BE331774A (xx)
BE331780A (xx)
BE248750A (xx)
BE209937A (xx)