NL13657C - - Google Patents
Info
- Publication number
- NL13657C NL13657C NL25329A NL25329A NL13657C NL 13657 C NL13657 C NL 13657C NL 25329 A NL25329 A NL 25329A NL 25329 A NL25329 A NL 25329A NL 13657 C NL13657 C NL 13657C
- 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
- H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
- H04R7/04—Plane diaphragms
- H04R7/06—Plane diaphragms comprising a plurality of sections or layers
- H04R7/10—Plane diaphragms comprising a plurality of sections or layers comprising superposed layers in contact
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16046/23A GB222180A (en) | 1923-06-20 | 1923-06-20 | Improvements relating to diaphragms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL13657C true NL13657C (xx) | 1925-09-15 |
Family
ID=10070144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL25329A NL13657C (xx) | 1923-06-20 | 1923-10-12 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US1646261A (xx) |
| DE (1) | DE430435C (xx) |
| FR (1) | FR568290A (xx) |
| GB (1) | GB222180A (xx) |
| NL (1) | NL13657C (xx) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2068820A2 (en) * | 1969-12-18 | 1971-09-03 | Geigy Ag J R | Stabilised phosphoric acid ester pesticides |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3020971A (en) * | 1962-02-13 | Cefaly | ||
| GB2169471A (en) * | 1985-01-04 | 1986-07-09 | Anthony Bernard Clarke | Acoustic diaphragm |
-
1923
- 1923-03-23 US US627063A patent/US1646261A/en not_active Expired - Lifetime
- 1923-06-20 GB GB16046/23A patent/GB222180A/en not_active Expired
- 1923-06-23 DE DER58770D patent/DE430435C/de not_active Expired
- 1923-07-02 FR FR568290D patent/FR568290A/fr not_active Expired
- 1923-10-12 NL NL25329A patent/NL13657C/xx active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2068820A2 (en) * | 1969-12-18 | 1971-09-03 | Geigy Ag J R | Stabilised phosphoric acid ester pesticides |
Also Published As
| Publication number | Publication date |
|---|---|
| DE430435C (de) | 1926-06-18 |
| US1646261A (en) | 1927-10-18 |
| GB222180A (en) | 1924-09-22 |
| FR568290A (fr) | 1924-03-21 |