DK43761C - Kulmikrofon. - Google Patents
Kulmikrofon.Info
- Publication number
- DK43761C DK43761C DK43761DA DK43761C DK 43761 C DK43761 C DK 43761C DK 43761D A DK43761D A DK 43761DA DK 43761 C DK43761 C DK 43761C
- Authority
- DK
- Denmark
- Prior art keywords
- carbon microphone
- microphone
- carbon
- Prior art date
Links
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL43761X | 1929-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
DK43761C true DK43761C (da) | 1931-02-23 |
Family
ID=19755865
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DK43761D DK43761C (da) | 1929-03-02 | 1930-01-24 | Kulmikrofon. |
Country Status (1)
Country | Link |
---|---|
DK (1) | DK43761C (da) |
-
1930
- 1930-01-24 DK DK43761D patent/DK43761C/da active
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