NL21240C - - Google Patents
Info
- Publication number
- NL21240C NL21240C NL21240DA NL21240C NL 21240 C NL21240 C NL 21240C NL 21240D A NL21240D A NL 21240DA NL 21240 C NL21240 C NL 21240C
- 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
- H04R7/00—Diaphragms for electromechanical transducers; Cones
- H04R7/16—Mounting or tensioning of diaphragms or cones
- H04R7/18—Mounting or tensioning of diaphragms or cones at the periphery
- H04R7/20—Securing diaphragm or cone resiliently to support by flexible material, springs, cords, or strands
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB233227A GB286841A (en) | 1927-01-26 | 1927-01-26 | Improvements in or relating to the attachment of diaphragms or oscillation members for loud-speakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL21240C true NL21240C (enrdf_load_html_response) |
Family
ID=9737673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL21240D NL21240C (enrdf_load_html_response) | 1927-01-26 |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE345857A (enrdf_load_html_response) |
| FR (1) | FR643063A (enrdf_load_html_response) |
| GB (1) | GB286841A (enrdf_load_html_response) |
| NL (1) | NL21240C (enrdf_load_html_response) |
-
0
- BE BE345857D patent/BE345857A/xx unknown
- NL NL21240D patent/NL21240C/xx active
-
1927
- 1927-01-26 GB GB233227A patent/GB286841A/en not_active Expired
- 1927-10-27 FR FR643063D patent/FR643063A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR643063A (fr) | 1928-09-10 |
| BE345857A (enrdf_load_html_response) | |
| GB286841A (en) | 1928-03-15 |