NL6808237A - - Google Patents
Info
- Publication number
- NL6808237A NL6808237A NL6808237A NL6808237A NL6808237A NL 6808237 A NL6808237 A NL 6808237A NL 6808237 A NL6808237 A NL 6808237A NL 6808237 A NL6808237 A NL 6808237A NL 6808237 A NL6808237 A NL 6808237A
- Authority
- NL
- Netherlands
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Electromagnetism (AREA)
- Acoustics & Sound (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US136220A US3413424A (en) | 1961-09-06 | 1961-09-06 | Electro-acoustic transducer |
NL282929 | 1962-09-06 | ||
US393619A US3249702A (en) | 1961-09-06 | 1964-09-01 | Transducer |
Publications (2)
Publication Number | Publication Date |
---|---|
NL6808237A true NL6808237A (xx) | 1968-09-25 |
NL142860B NL142860B (nl) | 1974-07-15 |
Family
ID=27351056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL686808237A NL142860B (nl) | 1961-09-06 | 1968-06-12 | Elektromagnetische telefoon of microfoon. |
Country Status (1)
Country | Link |
---|---|
NL (1) | NL142860B (xx) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2661549C2 (ru) * | 2016-05-16 | 2018-07-17 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Саратовский государственный технический университет имени Гагарина Ю.А."(СГТУ имени Гагарина Ю.А.) | Устройство для формирования звукового сигнала |
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1968
- 1968-06-12 NL NL686808237A patent/NL142860B/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
NL142860B (nl) | 1974-07-15 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NL80 | Abbreviated name of patent owner mentioned of already nullified patent |
Owner name: IND RESEARCH |
|
V4 | Lapsed because of reaching the maximum lifetime of a patent |