NL22552C - - Google Patents

Info

Publication number: NL22552C
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.)

1926-08-30

Publication of NL22552C publication Critical patent/NL22552C/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

Landscapes

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

NL22552D 1926-08-30 NL22552C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB21316/26A GB279587A (en)	1926-08-30	1926-08-30	Improvements in loud speakers

Publications (1)

Publication Number	Publication Date
NL22552C true NL22552C (enrdf_load_stackoverflow)

Family

ID=10160805

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL22552D NL22552C (enrdf_load_stackoverflow)	1926-08-30

Country Status (5)

Country	Link
US (1)	US1716772A (enrdf_load_stackoverflow)
DE (1)	DE493182C (enrdf_load_stackoverflow)
FR (1)	FR640227A (enrdf_load_stackoverflow)
GB (1)	GB279587A (enrdf_load_stackoverflow)
NL (1)	NL22552C (enrdf_load_stackoverflow)

0
- NL NL22552D patent/NL22552C/xx active
1926
- 1926-08-30 GB GB21316/26A patent/GB279587A/en not_active Expired
1927
- 1927-08-26 US US215543A patent/US1716772A/en not_active Expired - Lifetime
- 1927-08-29 FR FR640227D patent/FR640227A/fr not_active Expired
- 1927-08-30 DE DED53775D patent/DE493182C/de not_active Expired

Also Published As

Publication number	Publication date
DE493182C (de)	1930-03-05
US1716772A (en)	1929-06-11
FR640227A (fr)	1928-07-09
GB279587A (en)	1927-11-03

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