GB2227906B - Telephone including a call barrer - Google Patents

Telephone including a call barrer

Info

Publication number
GB2227906B
GB2227906B GB8928212A GB8928212A GB2227906B GB 2227906 B GB2227906 B GB 2227906B GB 8928212 A GB8928212 A GB 8928212A GB 8928212 A GB8928212 A GB 8928212A GB 2227906 B GB2227906 B GB 2227906B
Authority
GB
United Kingdom
Prior art keywords
barrer
call
telephone including
telephone
call barrer
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 - Fee Related
Application number
GB8928212A
Other versions
GB8928212D0 (en
GB2227906A (en
Inventor
Adam Rawicz-Szczerbo
Donald Ivor Fewings
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.)
RATHDOWN IND Ltd
Original Assignee
RATHDOWN IND Ltd
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
Priority claimed from GB888830170A external-priority patent/GB8830170D0/en
Priority claimed from GB888830289A external-priority patent/GB8830289D0/en
Application filed by RATHDOWN IND Ltd filed Critical RATHDOWN IND Ltd
Publication of GB8928212D0 publication Critical patent/GB8928212D0/en
Publication of GB2227906A publication Critical patent/GB2227906A/en
Priority to US07/625,654 priority Critical patent/US5121701A/en
Application granted granted Critical
Publication of GB2227906B publication Critical patent/GB2227906B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/677—Preventing the dialling or sending of predetermined telephone numbers or selected types of telephone numbers, e.g. long distance numbers
GB8928212A 1988-12-23 1989-12-13 Telephone including a call barrer Expired - Fee Related GB2227906B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/625,654 US5121701A (en) 1989-12-13 1990-12-12 Transplating apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB888830170A GB8830170D0 (en) 1988-12-23 1988-12-23 Enhancement of parallel call barrer
GB888830289A GB8830289D0 (en) 1988-12-28 1988-12-28 Telephone including a call barrer

Publications (3)

Publication Number Publication Date
GB8928212D0 GB8928212D0 (en) 1990-02-14
GB2227906A GB2227906A (en) 1990-08-08
GB2227906B true GB2227906B (en) 1993-06-16

Family

ID=26294775

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8928212A Expired - Fee Related GB2227906B (en) 1988-12-23 1989-12-13 Telephone including a call barrer

Country Status (1)

Country Link
GB (1) GB2227906B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253542B (en) * 1991-03-07 1995-04-26 Itech Limited Improvements in and relating to telephone systems
GB9312665D0 (en) * 1993-06-18 1993-08-04 Binatone Electronics Plc Telephone set
AU694455C (en) * 1993-10-28 2001-09-06 Maldes Phoenix Limited Telephone bar device
FR2762953B1 (en) * 1997-05-02 2000-03-10 Id3M CALL DISCRIMINATOR APPARATUS FOR TELEPHONE LINE
US6014435A (en) * 1997-06-27 2000-01-11 Rosen; Howard B. Unauthorized call defeat apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569257A (en) * 1975-11-17 1980-06-11 Murray L Q Of a telephone instrument telephone security device for preventing unauthorised use
GB2146507A (en) * 1983-09-08 1985-04-17 Lake Electronic Tech Telephone security device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569257A (en) * 1975-11-17 1980-06-11 Murray L Q Of a telephone instrument telephone security device for preventing unauthorised use
GB2146507A (en) * 1983-09-08 1985-04-17 Lake Electronic Tech Telephone security device

Also Published As

Publication number Publication date
GB8928212D0 (en) 1990-02-14
GB2227906A (en) 1990-08-08

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20001213