NL4054C - - Google Patents
Info
- Publication number
- NL4054C NL4054C NL4054DA NL4054C NL 4054 C NL4054 C NL 4054C NL 4054D A NL4054D A NL 4054DA NL 4054 C NL4054 C NL 4054C
- 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
- H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Insulated Conductors (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB191506586T | 1915-05-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL4054C true NL4054C (https=) |
Family
ID=32674784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL4054D NL4054C (https=) | 1915-05-03 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE297633C (https=) |
| FR (1) | FR481660A (https=) |
| GB (1) | GB191506586A (https=) |
| NL (1) | NL4054C (https=) |
-
0
- NL NL4054D patent/NL4054C/xx active
- DE DENDAT297633D patent/DE297633C/de active Active
-
1915
- 1915-05-03 GB GB191506586D patent/GB191506586A/en not_active Expired
-
1916
- 1916-05-03 FR FR481660A patent/FR481660A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE297633C (https=) | |
| FR481660A (fr) | 1917-01-05 |
| GB191506586A (en) | 1916-04-27 |