DE268258C - - Google Patents
Info
- Publication number
- DE268258C DE268258C DENDAT268258D DE268258DA DE268258C DE 268258 C DE268258 C DE 268258C DE NDAT268258 D DENDAT268258 D DE NDAT268258D DE 268258D A DE268258D A DE 268258DA DE 268258 C DE268258 C DE 268258C
- Authority
- DE
- Germany
- Prior art keywords
- line
- telephone
- lever
- button
- busy
- 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.)
- Active
Links
- 230000004913 activation Effects 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 claims 1
- 210000000056 organ Anatomy 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 241000947840 Alteromonadales Species 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/68—Circuit arrangements for preventing eavesdropping
- H04M1/70—Lock-out or secrecy arrangements in party-line systems
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Telephonic Communication Services (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE268258C true DE268258C (en:Method) |
Family
ID=525245
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT268258D Active DE268258C (en:Method) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE268258C (en:Method) |
-
0
- DE DENDAT268258D patent/DE268258C/de active Active
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