NL7216129A - - Google Patents
Info
- Publication number
- NL7216129A NL7216129A NL7216129A NL7216129A NL7216129A NL 7216129 A NL7216129 A NL 7216129A NL 7216129 A NL7216129 A NL 7216129A NL 7216129 A NL7216129 A NL 7216129A NL 7216129 A NL7216129 A NL 7216129A
- Authority
- NL
- Netherlands
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
- H04M1/663—Preventing unauthorised calls to a telephone set
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Signal Processing (AREA)
- Devices For Supply Of Signal Current (AREA)
- Telephonic Communication Services (AREA)
- Alarm Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21426871A | 1971-12-30 | 1971-12-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7216129A true NL7216129A (xx) | 1973-07-03 |
Family
ID=22798432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7216129A NL7216129A (xx) | 1971-12-30 | 1972-11-28 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3777067A (xx) |
| JP (1) | JPS4875106A (xx) |
| BE (1) | BE791694A (xx) |
| CA (1) | CA962388A (xx) |
| FR (1) | FR2167142A5 (xx) |
| GB (1) | GB1409819A (xx) |
| IT (1) | IT973990B (xx) |
| NL (1) | NL7216129A (xx) |
| SE (1) | SE381545B (xx) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4027109A (en) * | 1975-06-27 | 1977-05-31 | Smith Lloyd M | Telephone call diverting system |
| US3997735A (en) * | 1975-09-24 | 1976-12-14 | Bell Telephone Laboratories, Incorporated | Telephone station make-busy circuit |
| FR2574607A2 (fr) * | 1983-12-15 | 1986-06-13 | Regnier Marc Andre | Dispositif electronique anti-cambriolage simulant une presence telephonique en l'absence de l'abonne |
| FR2556908B1 (fr) * | 1983-12-15 | 1986-11-21 | Regnier Marc Andre | Dispositif electronique anti-cambriolage simulant une presence telephonique en l'absence de l'abonne |
| FR2564268A1 (fr) * | 1984-05-11 | 1985-11-15 | Paule Yves | Procedes et dispositifs pour eviter temporairement de recevoir des appels sur un appareil telephonique |
| JPS61189755A (ja) * | 1985-02-18 | 1986-08-23 | Hashimoto Corp | 自動的に待機状態を形成する留守番電話装置 |
| US5544241A (en) * | 1995-06-27 | 1996-08-06 | Andrew S. Dibner | Telephone ring detector |
| US6580789B1 (en) * | 2000-01-18 | 2003-06-17 | Immix Telecom, Inc. | Automated prefix dialing system |
| US20030097659A1 (en) * | 2001-11-16 | 2003-05-22 | Goldman Phillip Y. | Interrupting the output of media content in response to an event |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3126453A (en) * | 1964-03-24 | Means for altering telephone operation | ||
| DE624996C (de) * | 1930-03-17 | 1936-02-01 | Rudolf Max Braun Ing | Rueckmelder fuer Telephonstellen |
| US2481840A (en) * | 1945-06-28 | 1949-09-13 | Automatic Elect Lab | Timer for switching from signaling device to the subscriber's ringer after selectable predetermined time |
| DE1186909B (de) * | 1957-11-21 | 1965-02-11 | Hiroye Muramatsu | Schaltungsanordnung fuer Fernsprechteilnehmeranlagen |
| FR1283074A (fr) * | 1961-03-08 | 1962-01-27 | Installation téléphonique d'abonné | |
| US3248481A (en) * | 1962-06-06 | 1966-04-26 | Walter F Grote | Telephone answering device |
| US3226489A (en) * | 1962-10-24 | 1965-12-28 | Russel J Grambsch | Communications control system |
| US3673339A (en) * | 1970-07-22 | 1972-06-27 | Bell Telephone Labor Inc | Artificial line busy circuit |
-
0
- BE BE791694D patent/BE791694A/xx unknown
-
1971
- 1971-12-30 US US00214268A patent/US3777067A/en not_active Expired - Lifetime
-
1972
- 1972-11-15 CA CA156,501A patent/CA962388A/en not_active Expired
- 1972-11-28 NL NL7216129A patent/NL7216129A/xx unknown
- 1972-12-11 IT IT54603/72A patent/IT973990B/it active
- 1972-12-13 GB GB5746772A patent/GB1409819A/en not_active Expired
- 1972-12-20 JP JP47128078A patent/JPS4875106A/ja active Pending
- 1972-12-28 FR FR7246574A patent/FR2167142A5/fr not_active Expired
- 1972-12-29 SE SE7217206A patent/SE381545B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE791694A (fr) | 1973-03-16 |
| DE2262469A1 (de) | 1973-07-12 |
| DE2262469B2 (de) | 1976-07-22 |
| SE381545B (sv) | 1975-12-08 |
| IT973990B (it) | 1974-06-10 |
| US3777067A (en) | 1973-12-04 |
| CA962388A (en) | 1975-02-04 |
| GB1409819A (en) | 1975-10-15 |
| JPS4875106A (xx) | 1973-10-09 |
| FR2167142A5 (xx) | 1973-08-17 |