ES12378A1 - Improvements made to carbon cylinder microphones. - Google Patents
Improvements made to carbon cylinder microphones.Info
- Publication number
- ES12378A1 ES12378A1 ES12378A ES12378A ES12378A1 ES 12378 A1 ES12378 A1 ES 12378A1 ES 12378 A ES12378 A ES 12378A ES 12378 A ES12378 A ES 12378A ES 12378 A1 ES12378 A1 ES 12378A1
- Authority
- ES
- Spain
- Prior art keywords
- microphones
- improvements made
- carbon cylinder
- carbon
- cylinder
- 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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES12378A ES12378A1 (en) | 1891-08-01 | 1891-08-01 | Improvements made to carbon cylinder microphones. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES12378A ES12378A1 (en) | 1891-08-01 | 1891-08-01 | Improvements made to carbon cylinder microphones. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES12378A1 true ES12378A1 (en) | 1891-09-01 |
Family
ID=64158086
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES12378A Expired ES12378A1 (en) | 1891-08-01 | 1891-08-01 | Improvements made to carbon cylinder microphones. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES12378A1 (en) |
-
1891
- 1891-08-01 ES ES12378A patent/ES12378A1/en not_active Expired
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