CA34396A - Speaking tube - Google Patents
Speaking tubeInfo
- Publication number
- CA34396A CA34396A CA000034396A CA34396DA CA34396A CA 34396 A CA34396 A CA 34396A CA 000034396 A CA000034396 A CA 000034396A CA 34396D A CA34396D A CA 34396DA CA 34396 A CA34396 A CA 34396A
- Authority
- CA
- Canada
- Prior art keywords
- speaking tube
- speaking
- tube
- 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 |
---|---|---|---|
CA34396T |
Publications (1)
Publication Number | Publication Date |
---|---|
CA34396A true CA34396A (en) | 1890-05-22 |
Family
ID=45150936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA000034396A Expired CA34396A (en) | Speaking tube |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA34396A (en) |
-
0
- CA CA000034396A patent/CA34396A/en not_active Expired
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