NL11725C - - Google Patents
Info
- Publication number
- NL11725C NL11725C NL18704A NL18704A NL11725C NL 11725 C NL11725 C NL 11725C NL 18704 A NL18704 A NL 18704A NL 18704 A NL18704 A NL 18704A NL 11725 C NL11725 C NL 11725C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
- H04R23/004—Transducers other than those covered by groups H04R9/00 - H04R21/00 using ionised gas
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Resistance Heating (AREA)
- Jet Pumps And Other Pumps (AREA)
- Reciprocating Pumps (AREA)
- Joining Of Glass To Other Materials (AREA)
- Cosmetics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE350500T | 1919-08-03 | ||
| US458632A US1534148A (en) | 1919-08-03 | 1921-04-04 | Sound-translating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL11725C true NL11725C (fr) | 1924-10-15 |
Family
ID=40404873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL18704A NL11725C (fr) | 1919-08-03 | 1921-03-26 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1534148A (fr) |
| DE (7) | DE351955C (fr) |
| FR (1) | FR532175A (fr) |
| GB (1) | GB157442A (fr) |
| NL (1) | NL11725C (fr) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR910133A (fr) * | 1945-01-10 | 1946-05-28 | Comptoir Des Cendres Et Metaux | émetteur thermoionique |
| US2669609A (en) * | 1948-10-30 | 1954-02-16 | Rca Corp | Electron discharge device |
| US2530745A (en) * | 1948-12-10 | 1950-11-21 | Bell Telephone Labor Inc | Transistor microphone with conductive grains |
| US2768246A (en) * | 1951-05-12 | 1956-10-23 | Charles Legorju | Electrical transducer |
| US3580075A (en) * | 1967-07-31 | 1971-05-25 | Corning Glass Works | Pressure transducer for ionizable fluids |
| US5401038A (en) * | 1993-08-26 | 1995-03-28 | David G. Peck | Mechanical brake for in-line roller skates |
| US5375859A (en) * | 1993-08-26 | 1994-12-27 | David G. Peck | Mechanical brake for in-line roller skate |
-
1916
- 1916-11-05 DE DE1916351955D patent/DE351955C/de not_active Expired
-
1919
- 1919-08-03 DE DE1919350500D patent/DE350500C/de not_active Expired
-
1920
- 1920-06-23 DE DE1920351956D patent/DE351956C/de not_active Expired
- 1920-06-23 DE DEV15651D patent/DE368025C/de not_active Expired
-
1921
- 1921-01-10 GB GB1371/21A patent/GB157442A/en not_active Expired
- 1921-03-15 FR FR532175D patent/FR532175A/fr not_active Expired
- 1921-03-26 NL NL18704A patent/NL11725C/xx active
- 1921-04-04 US US458632A patent/US1534148A/en not_active Expired - Lifetime
- 1921-05-19 DE DEV16511D patent/DE366266C/de not_active Expired
- 1921-05-19 DE DEV16512D patent/DE368288C/de not_active Expired
-
1922
- 1922-08-26 DE DEV17711D patent/DE405857C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR532175A (fr) | 1922-01-30 |
| US1534148A (en) | 1925-04-21 |
| DE351955C (de) | 1922-04-19 |
| DE368288C (de) | 1923-02-06 |
| DE405857C (de) | 1924-11-12 |
| DE368025C (de) | 1923-01-29 |
| DE351956C (de) | 1922-04-19 |
| DE366266C (de) | 1923-01-03 |
| DE350500C (de) | 1922-03-22 |
| GB157442A (en) | 1921-09-22 |