GB191509644A - - Google Patents
Info
- Publication number
- GB191509644A GB191509644A GBQ9644DA GB191509644A GB 191509644 A GB191509644 A GB 191509644A GB Q9644D A GBQ9644D A GB Q9644DA GB 191509644 A GB191509644 A GB 191509644A
- Authority
- GB
- United Kingdom
- Legal status (The legal status 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 status listed.)
- Active
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
- H04R1/42—Combinations of transducers with fluid-pressure or other non-electrical amplifying means
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Telephone Set Structure (AREA)
- Electromagnets (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE287865T | 1912-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB191509644A true GB191509644A (de) |
Family
ID=6059598
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBQ9644D Active GB191509644A (de) | 1912-04-24 | ||
| GBQ10669D Active GB191510669A (de) | 1912-04-24 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GBQ10669D Active GB191510669A (de) | 1912-04-24 |
Country Status (4)
| Country | Link |
|---|---|
| DE (2) | DE287865C (de) |
| FR (1) | FR456985A (de) |
| GB (2) | GB191510669A (de) |
| NL (1) | NL1734C (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2967094B2 (ja) * | 1995-11-02 | 1999-10-25 | 工業技術院長 | 窒化アルミニウム焼結体、及び窒化アルミニウム粉末の製造方法 |
-
0
- GB GBQ9644D patent/GB191509644A/en active Active
- GB GBQ10669D patent/GB191510669A/en active Active
- DE DENDAT288502D patent/DE288502C/de active Active
- NL NL1734D patent/NL1734C/xx active
-
1912
- 1912-04-24 DE DE1912287865D patent/DE287865C/de not_active Expired - Lifetime
-
1913
- 1913-04-23 FR FR456985D patent/FR456985A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE288502C (de) | |
| FR456985A (fr) | 1913-09-09 |
| GB191510669A (de) | |
| DE287865C (de) | |
| NL1734C (de) |