CA285762A - Sound amplifying device - Google Patents
Sound amplifying deviceInfo
- Publication number
- CA285762A CA285762A CA285762A CA285762DA CA285762A CA 285762 A CA285762 A CA 285762A CA 285762 A CA285762 A CA 285762A CA 285762D A CA285762D A CA 285762DA CA 285762 A CA285762 A CA 285762A
- Authority
- CA
- Canada
- Prior art keywords
- amplifying device
- sound amplifying
- sound
- amplifying
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA285762T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA285762A true CA285762A (en) | 1928-12-18 |
Family
ID=35222575
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA285762A Expired CA285762A (en) | Sound amplifying device |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA285762A (en) |
-
0
- CA CA285762A patent/CA285762A/en not_active Expired
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