NL6515063A - - Google Patents
Info
- Publication number
- NL6515063A NL6515063A NL6515063A NL6515063A NL6515063A NL 6515063 A NL6515063 A NL 6515063A NL 6515063 A NL6515063 A NL 6515063A NL 6515063 A NL6515063 A NL 6515063A NL 6515063 A NL6515063 A NL 6515063A
- 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
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/02—Microphones
-
- 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
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES94734A DE1277346B (en) | 1964-12-21 | 1964-12-21 | Crystal microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6515063A true NL6515063A (en) | 1966-06-22 |
Family
ID=7518895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6515063A NL6515063A (en) | 1964-12-21 | 1965-11-19 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3472972A (en) |
| AT (1) | AT258372B (en) |
| CH (1) | CH432594A (en) |
| DE (1) | DE1277346B (en) |
| FR (1) | FR1458899A (en) |
| NL (1) | NL6515063A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3666899A (en) * | 1971-01-04 | 1972-05-30 | Rolamite Inc | Push button switches with interlocking diaphragm contact |
| DE3221997A1 (en) * | 1982-06-11 | 1983-12-15 | Securiton AG, 3052 Zollikofen, Bern | DEVICE FOR MONITORING ARMORED ROOMS, ESPECIALLY SAFE AND CABINETS, AND FOR GENERATING AN ALARM SIGNAL WHEN A BURGLAR ATTEMPT IS TAKEN |
| SE443483B (en) * | 1983-01-14 | 1986-02-24 | Gustav Georg Arne Bolin | RECEIVER MAGNETIC FOR SOUND WAVES CONSISTING OF A RESONANCE DISC AND ANTICULAR CAUSED BY THE SOUND MOVES REACTING PIEZOELECTRIC MICROPHONE TYPE MICROPHONE |
| DE3623587A1 (en) * | 1986-07-12 | 1988-01-21 | Gerd Kress | Appliance for measuring the operating time of machines |
| US8003878B2 (en) * | 2008-08-05 | 2011-08-23 | Gaynier David A | Electroacoustic transducer system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE728240C (en) * | 1937-10-23 | 1942-11-23 | Telefunken Gmbh | Protection device for electrical pickups |
| DE936653C (en) * | 1951-03-22 | 1955-12-15 | Electroacustic Ges M B H | Pickup systems on speaking machines |
| US3383475A (en) * | 1965-09-08 | 1968-05-14 | Euphonics Corp | Microphone employing piezoresistive element |
-
1964
- 1964-12-21 DE DES94734A patent/DE1277346B/en active Pending
-
1965
- 1965-11-19 NL NL6515063A patent/NL6515063A/xx unknown
- 1965-12-13 US US513266A patent/US3472972A/en not_active Expired - Lifetime
- 1965-12-20 CH CH1753965A patent/CH432594A/en unknown
- 1965-12-20 FR FR42977A patent/FR1458899A/en not_active Expired
- 1965-12-20 AT AT1144865A patent/AT258372B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| US3472972A (en) | 1969-10-14 |
| CH432594A (en) | 1967-03-31 |
| AT258372B (en) | 1967-11-27 |
| DE1277346B (en) | 1968-09-12 |
| FR1458899A (en) | 1966-11-10 |