CH81983A - Hörtelephon - Google Patents
HörtelephonInfo
- Publication number
- CH81983A CH81983A CH81983A CH81983DA CH81983A CH 81983 A CH81983 A CH 81983A CH 81983 A CH81983 A CH 81983A CH 81983D A CH81983D A CH 81983DA CH 81983 A CH81983 A CH 81983A
- Authority
- CH
- Switzerland
- Prior art keywords
- handset
- Prior art date
Links
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH81983T | 1918-04-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH81983A true CH81983A (de) | 1919-08-16 |
Family
ID=4336657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH81983A CH81983A (de) | 1918-04-22 | 1918-04-22 | Hörtelephon |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH81983A (de) |
-
1918
- 1918-04-22 CH CH81983A patent/CH81983A/de unknown
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