NL47966C - - Google Patents
Info
- Publication number
- NL47966C NL47966C NL47966DA NL47966C NL 47966 C NL47966 C NL 47966C NL 47966D A NL47966D A NL 47966DA NL 47966 C NL47966 C NL 47966C
- Authority
- NL
- Netherlands
Links
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
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
- H04R1/083—Special constructions of mouthpieces
-
- 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
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/222—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for microphones
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US99910A US2131593A (en) | 1936-09-09 | 1936-09-09 | Acoustic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL47966C true NL47966C (xx) |
Family
ID=22277206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL47966D NL47966C (xx) | 1936-09-09 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2131593A (xx) |
| CH (1) | CH201674A (xx) |
| FR (1) | FR822144A (xx) |
| GB (1) | GB473878A (xx) |
| NL (1) | NL47966C (xx) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB656723A (en) * | 1948-01-10 | 1951-08-29 | Edward Shipton | Improvements in or relating to telephone instruments |
| US4529059A (en) * | 1982-12-27 | 1985-07-16 | Federal Signal Corporation | Vibrating diaphragm type audible device with acoustically improved grille and method |
| US7697698B2 (en) * | 2003-08-22 | 2010-04-13 | William Sumner Brown | Sound-based vehicle safety system |
| USD760204S1 (en) * | 2015-01-05 | 2016-06-28 | Gibson Brands, Inc. | Microphone |
| USD760203S1 (en) * | 2015-01-05 | 2016-06-28 | Gibson Brands, Inc. | Microphone |
| USD760704S1 (en) * | 2015-01-05 | 2016-07-05 | Gibson Brands, Inc. | Microphone |
| USD808937S1 (en) * | 2016-12-30 | 2018-01-30 | Liangyi Zheng | Microphone |
| USD840476S1 (en) * | 2017-07-10 | 2019-02-12 | MerchSource, LLC | Kid's microphone |
| JP1666937S (xx) * | 2019-09-05 | 2020-08-31 | ||
| USD899407S1 (en) * | 2020-03-21 | 2020-10-20 | Shenzhen Xunweijia Technology Development Co., Ltd. | Microphone |
| USD918876S1 (en) * | 2020-05-19 | 2021-05-11 | Shenzhen Xunweijia Technology Development Co., Shenzhen | Microphone |
-
0
- NL NL47966D patent/NL47966C/xx active
-
1936
- 1936-09-09 US US99910A patent/US2131593A/en not_active Expired - Lifetime
-
1937
- 1937-05-07 GB GB13106/37A patent/GB473878A/en not_active Expired
- 1937-05-22 FR FR822144D patent/FR822144A/fr not_active Expired
- 1937-06-08 CH CH201674D patent/CH201674A/fr unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB473878A (en) | 1937-10-21 |
| CH201674A (fr) | 1938-12-15 |
| US2131593A (en) | 1938-09-27 |
| FR822144A (fr) | 1937-12-21 |