ES74582A1 - An improved microphone. - Google Patents
An improved microphone.Info
- Publication number
- ES74582A1 ES74582A1 ES74582A ES74582A ES74582A1 ES 74582 A1 ES74582 A1 ES 74582A1 ES 74582 A ES74582 A ES 74582A ES 74582 A ES74582 A ES 74582A ES 74582 A1 ES74582 A1 ES 74582A1
- Authority
- ES
- Spain
- Prior art keywords
- improved microphone
- microphone
- improved
- 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 |
---|---|---|---|
ES74582A ES74582A1 (en) | 1920-07-09 | 1920-07-09 | An improved microphone. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES74582A ES74582A1 (en) | 1920-07-09 | 1920-07-09 | An improved microphone. |
Publications (1)
Publication Number | Publication Date |
---|---|
ES74582A1 true ES74582A1 (en) | 1920-11-01 |
Family
ID=64244596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES74582A Expired ES74582A1 (en) | 1920-07-09 | 1920-07-09 | An improved microphone. |
Country Status (1)
Country | Link |
---|---|
ES (1) | ES74582A1 (en) |
-
1920
- 1920-07-09 ES ES74582A patent/ES74582A1/en not_active Expired
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