AU4473489A - Device for preventing unlawful telephonic communication by parallel telephone - Google Patents

Device for preventing unlawful telephonic communication by parallel telephone

Info

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
Application number
AU44734/89A
Other versions
AU613812B2 (en
Inventor
Shigeyasu Tanaka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anritsu Corp
Original Assignee
Anritsu Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Anritsu Corp filed Critical Anritsu Corp
Publication of AU4473489A publication Critical patent/AU4473489A/en
Application granted granted Critical
Publication of AU613812B2 publication Critical patent/AU613812B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

AU44734/89A 1988-11-18 1989-11-15 Device for preventing unlawful telephonic communication by parallel telephone Ceased AU613812B2 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2595526A1 (en) * 1986-03-07 1987-09-11 Centomo Jean Louis TELEPHONE LINE ANTI-THEFT DEVICE

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