AU4473489A - Device for preventing unlawful telephonic communication by parallel telephone - Google Patents
Device for preventing unlawful telephonic communication by parallel telephoneInfo
- Publication number
- AU4473489A AU4473489A AU44734/89A AU4473489A AU4473489A AU 4473489 A AU4473489 A AU 4473489A AU 44734/89 A AU44734/89 A AU 44734/89A AU 4473489 A AU4473489 A AU 4473489A AU 4473489 A AU4473489 A AU 4473489A
- Authority
- AU
- Australia
- Prior art keywords
- telephonic communication
- parallel telephone
- preventing unlawful
- unlawful
- preventing
- 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.)
- Granted
Links
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP29187388A JPH02137566A (en) | 1988-11-18 | 1988-11-18 | Speech obstructing method for telephone set |
JP63-291873 | 1988-11-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU4473489A true AU4473489A (en) | 1990-08-09 |
AU613812B2 AU613812B2 (en) | 1991-08-08 |
Family
ID=17774542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU44734/89A Ceased AU613812B2 (en) | 1988-11-18 | 1989-11-15 | Device for preventing unlawful telephonic communication by parallel telephone |
Country Status (2)
Country | Link |
---|---|
JP (1) | JPH02137566A (en) |
AU (1) | AU613812B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5615246A (en) * | 1993-05-28 | 1997-03-25 | Us West Technologies, Inc. | Method and apparatus for spurious signal detection and disconnection in a hybrid fiber/coax network architecture |
CA2279684C (en) * | 1999-08-05 | 2007-05-15 | Vtech Communications, Ltd. | Method and apparatus for telephone call fraud detection and prevention |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2595526A1 (en) * | 1986-03-07 | 1987-09-11 | Centomo Jean Louis | TELEPHONE LINE ANTI-THEFT DEVICE |
-
1988
- 1988-11-18 JP JP29187388A patent/JPH02137566A/en active Pending
-
1989
- 1989-11-15 AU AU44734/89A patent/AU613812B2/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
JPH02137566A (en) | 1990-05-25 |
AU613812B2 (en) | 1991-08-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |