GB191211261A - A Graded Service Automatic Telephone System. - Google Patents

A Graded Service Automatic Telephone System.

Info

Publication number
GB191211261A
GB191211261A GB191211261DA GB191211261A GB 191211261 A GB191211261 A GB 191211261A GB 191211261D A GB191211261D A GB 191211261DA GB 191211261 A GB191211261 A GB 191211261A
Authority
GB
United Kingdom
Prior art keywords
dial
stop
lever
impulse
impulses
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
Application number
Other languages
English (en)
Inventor
Harold Baron
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of GB191211261A publication Critical patent/GB191211261A/en
Expired 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
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
  • Exchange Systems With Centralized Control (AREA)
  • Prepayment Telephone Systems (AREA)
  • Structure Of Telephone Exchanges (AREA)
GB191211261D 1912-03-18 1912-05-11 A Graded Service Automatic Telephone System. Expired GB191211261A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE269302T 1912-03-18

Publications (1)

Publication Number Publication Date
GB191211261A true GB191211261A (en) 1913-05-08

Family

ID=32571881

Family Applications (2)

Application Number Title Priority Date Filing Date
GB191211261D Expired GB191211261A (en) 1912-03-18 1912-05-11 A Graded Service Automatic Telephone System.
GB191311590D Expired GB191311590A (en) 1912-03-18 1913-05-19 Graded Service Automatic or Semi-automatic Telephone System.

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB191311590D Expired GB191311590A (en) 1912-03-18 1913-05-19 Graded Service Automatic or Semi-automatic Telephone System.

Country Status (4)

Country Link
US (1) US1341801A (enrdf_load_stackoverflow)
DE (1) DE269302C (enrdf_load_stackoverflow)
FR (1) FR455006A (enrdf_load_stackoverflow)
GB (2) GB191211261A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624085A (en) * 1949-05-10 1953-01-06 Feiner Richard Staple for attaching buttons

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943123C (de) * 1953-01-28 1956-05-09 Lorenz C Ag Nummernschalter mit Sperrung einzelner Rufnummern
DE970417C (de) * 1954-03-20 1958-09-18 Hagenuk Neufeldt Kuhnke Gmbh Vorrichtung zum Sperren mehrstelliger Sperrnummern an Nummernschaltern von Fernsprechapparaten
DE967314C (de) * 1954-03-20 1957-10-31 Hagenuk Neufeldt Kuhnke Gmbh Vorrichtung zum Sperren mehrstelliger Sperrnummern an Selbstwaehlern von Muenzfernsprechern
US3566042A (en) * 1967-05-04 1971-02-23 Giorgio Pugliese Device for preventing or signalling the dialing of given telephone numbers
US3553382A (en) * 1967-08-04 1971-01-05 Edward R Edelberg Toll call signalling and diverting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624085A (en) * 1949-05-10 1953-01-06 Feiner Richard Staple for attaching buttons

Also Published As

Publication number Publication date
US1341801A (en) 1920-06-01
GB191311590A (en) 1914-05-19
DE269302C (enrdf_load_stackoverflow)
FR455006A (fr) 1913-07-21

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