BE616681A - Improvements to copper-based alloys - Google Patents
Improvements to copper-based alloysInfo
- Publication number
- BE616681A BE616681A BE616681A BE616681A BE616681A BE 616681 A BE616681 A BE 616681A BE 616681 A BE616681 A BE 616681A BE 616681 A BE616681 A BE 616681A BE 616681 A BE616681 A BE 616681A
- Authority
- BE
- Belgium
- Prior art keywords
- copper
- based alloys
- alloys
- Prior art date
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
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US616681XA | 1961-04-20 | 1961-04-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
BE616681A true BE616681A (en) | 1962-08-16 |
Family
ID=22037309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE616681A BE616681A (en) | 1961-04-20 | 1962-04-19 | Improvements to copper-based alloys |
Country Status (2)
Country | Link |
---|---|
BE (1) | BE616681A (en) |
FR (1) | FR616681A (en) |
-
1926
- 1926-05-26 FR FR616681D patent/FR616681A/en not_active Expired
-
1962
- 1962-04-19 BE BE616681A patent/BE616681A/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR616681A (en) | 1927-02-05 |
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