NL13948C - - Google Patents
Info
- Publication number
- NL13948C NL13948C NL13948DA NL13948C NL 13948 C NL13948 C NL 13948C NL 13948D A NL13948D A NL 13948DA NL 13948 C NL13948 C NL 13948C
- 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
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US210737XA | 1923-01-31 | 1923-01-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL13948C true NL13948C (fr) |
Family
ID=21802188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL13948D NL13948C (fr) | 1923-01-31 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1564026A (fr) |
| DE (1) | DE423874C (fr) |
| FR (1) | FR573000A (fr) |
| GB (1) | GB210737A (fr) |
| NL (1) | NL13948C (fr) |
-
0
- US US1564026D patent/US1564026A/en not_active Expired - Lifetime
- NL NL13948D patent/NL13948C/xx active
-
1923
- 1923-10-03 GB GB24597/23A patent/GB210737A/en not_active Expired
- 1923-10-10 FR FR573000D patent/FR573000A/fr not_active Expired
- 1923-10-17 DE DER59523D patent/DE423874C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR573000A (fr) | 1924-06-16 |
| US1564026A (en) | 1925-12-01 |
| GB210737A (en) | 1925-01-01 |
| DE423874C (de) | 1926-01-13 |