CA330771A - Microphone au charbon - Google Patents
Microphone au charbonInfo
- Publication number
- CA330771A CA330771A CA330771A CA330771DA CA330771A CA 330771 A CA330771 A CA 330771A CA 330771 A CA330771 A CA 330771A CA 330771D A CA330771D A CA 330771DA CA 330771 A CA330771 A CA 330771A
- Authority
- CA
- Canada
- Prior art keywords
- carbon microphone
- microphone
- carbon
- 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.)
- Expired
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title 1
- 229910052799 carbon Inorganic materials 0.000 title 1
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA330771T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA330771A true CA330771A (fr) | 1933-03-07 |
Family
ID=35293141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA330771A Expired CA330771A (fr) | Microphone au charbon |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA330771A (fr) |
-
0
- CA CA330771A patent/CA330771A/fr not_active Expired
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