JPS5229703A - Acoustic parts and manufacturing process - Google Patents
Acoustic parts and manufacturing processInfo
- Publication number
- JPS5229703A JPS5229703A JP10558675A JP10558675A JPS5229703A JP S5229703 A JPS5229703 A JP S5229703A JP 10558675 A JP10558675 A JP 10558675A JP 10558675 A JP10558675 A JP 10558675A JP S5229703 A JPS5229703 A JP S5229703A
- Authority
- JP
- Japan
- Prior art keywords
- manufacturing process
- acoustic parts
- specific gravity
- acoustic
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
PURPOSE: Obtain an acoustic part with small specific gravity and large sound speed by forming a porous aluminium evaporation film having a specific gravity below a predetermined value and which is anode oxidized, on a substarate.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10558675A JPS5911962B2 (en) | 1975-09-02 | 1975-09-02 | Acoustic components and their manufacturing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10558675A JPS5911962B2 (en) | 1975-09-02 | 1975-09-02 | Acoustic components and their manufacturing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5229703A true JPS5229703A (en) | 1977-03-05 |
JPS5911962B2 JPS5911962B2 (en) | 1984-03-19 |
Family
ID=14411592
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10558675A Expired JPS5911962B2 (en) | 1975-09-02 | 1975-09-02 | Acoustic components and their manufacturing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5911962B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS553549U (en) * | 1978-06-20 | 1980-01-10 |
-
1975
- 1975-09-02 JP JP10558675A patent/JPS5911962B2/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS553549U (en) * | 1978-06-20 | 1980-01-10 |
Also Published As
Publication number | Publication date |
---|---|
JPS5911962B2 (en) | 1984-03-19 |
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