GB9807642D0 - Telephone signal filtering apparatus - Google Patents

Telephone signal filtering apparatus

Info

Publication number
GB9807642D0
GB9807642D0 GBGB9807642.5A GB9807642A GB9807642D0 GB 9807642 D0 GB9807642 D0 GB 9807642D0 GB 9807642 A GB9807642 A GB 9807642A GB 9807642 D0 GB9807642 D0 GB 9807642D0
Authority
GB
United Kingdom
Prior art keywords
filtering apparatus
signal filtering
telephone signal
telephone
signal
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.)
Ceased
Application number
GBGB9807642.5A
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.)
Status Hi Tech Ltd
Original Assignee
Status Hi Tech 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
Application filed by Status Hi Tech Ltd filed Critical Status Hi Tech Ltd
Priority to GBGB9807642.5A priority Critical patent/GB9807642D0/en
Publication of GB9807642D0 publication Critical patent/GB9807642D0/en
Priority to GB9908549A priority patent/GB2336505A/en
Ceased legal-status Critical Current

Links

GBGB9807642.5A 1998-04-14 1998-04-14 Telephone signal filtering apparatus Ceased GB9807642D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB9807642.5A GB9807642D0 (en) 1998-04-14 1998-04-14 Telephone signal filtering apparatus
GB9908549A GB2336505A (en) 1998-04-14 1999-04-14 Call screening using access code

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB9807642.5A GB9807642D0 (en) 1998-04-14 1998-04-14 Telephone signal filtering apparatus

Publications (1)

Publication Number Publication Date
GB9807642D0 true GB9807642D0 (en) 1998-06-10

Family

ID=10830118

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB9807642.5A Ceased GB9807642D0 (en) 1998-04-14 1998-04-14 Telephone signal filtering apparatus
GB9908549A Withdrawn GB2336505A (en) 1998-04-14 1999-04-14 Call screening using access code

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB9908549A Withdrawn GB2336505A (en) 1998-04-14 1999-04-14 Call screening using access code

Country Status (1)

Country Link
GB (2) GB9807642D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2443871B (en) * 2006-07-25 2010-09-08 Nigel Morris Programmable telephone call filtering system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4845743A (en) * 1986-09-12 1989-07-04 Lutz Joseph M System for selectively receiving telephone calls
US4860347A (en) * 1988-08-10 1989-08-22 Costello Lloyd M Phone screen security system
US4937854A (en) * 1989-03-03 1990-06-26 Sarakas Stephen T Call screening device
CA2002842A1 (en) * 1989-11-14 1991-05-14 Victor M. Buraconak Programmable external peripheral device using a 4 digit private identification number, p.i.n.#, to secure and protect and eliminate unsolicited and unwanted document reception, commonly known as "junk fax", applicable to a facsimile machine, commonly known as a fax machine
ES2103638B1 (en) * 1994-05-19 1998-05-01 Aprovisionamiento De Zumos Nat APPARATUS FOR TELEPHONE ACCESS CONTROL.
US5631951A (en) * 1996-03-19 1997-05-20 Chen; Albert Apparatus for preventing unwanted telephone calls

Also Published As

Publication number Publication date
GB2336505A (en) 1999-10-20
GB9908549D0 (en) 1999-06-09

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)