GB383166A - Improvements in and relating to dial switches - Google Patents

Improvements in and relating to dial switches

Info

Publication number
GB383166A
GB383166A GB9884/32A GB988432A GB383166A GB 383166 A GB383166 A GB 383166A GB 9884/32 A GB9884/32 A GB 9884/32A GB 988432 A GB988432 A GB 988432A GB 383166 A GB383166 A GB 383166A
Authority
GB
United Kingdom
Prior art keywords
discs
digits
digit
projection
disc
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
GB9884/32A
Other languages
English (en)
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.)
Fuld & Co Telephon
Original Assignee
Fuld & Co Telephon
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 Fuld & Co Telephon filed Critical Fuld & Co Telephon
Publication of GB383166A publication Critical patent/GB383166A/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
    • H04M1/66—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)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Transmission Devices (AREA)
  • Transmitters (AREA)
GB9884/32A 1931-04-13 1932-04-06 Improvements in and relating to dial switches Expired GB383166A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE383166X 1931-04-13
DEF72077D DE641077C (de) 1931-04-13 1931-10-23 Nummernschalter fuer Selbstanschlussanlagen mit mechanischer Verhinderung der Stromstossgabe nach Wahl bestimmter Ziffern

Publications (1)

Publication Number Publication Date
GB383166A true GB383166A (en) 1932-11-10

Family

ID=25872302

Family Applications (2)

Application Number Title Priority Date Filing Date
GB9884/32A Expired GB383166A (en) 1931-04-13 1932-04-06 Improvements in and relating to dial switches
GB10836/32A Expired GB389661A (en) 1931-04-13 1932-04-15 Improvements in and relating to dial switches

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB10836/32A Expired GB389661A (en) 1931-04-13 1932-04-15 Improvements in and relating to dial switches

Country Status (3)

Country Link
DE (1) DE641077C (zh)
GB (2) GB383166A (zh)
NL (1) NL36070C (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681532A (en) * 1969-01-15 1972-08-01 Int Standard Electric Corp Restricted dial telephone station

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1005761B (de) * 1951-12-12 1957-04-04 Askania Werke Ag Vorrichtung zur fortlaufenden Bestimmung des Feuchtigkeitsgehaltes von durch eine Luft-Trockenanlage laufenden Stoffen, insbesondere Stoffbahnen
US3284578A (en) * 1963-02-11 1966-11-08 Earl R Evans Direct-dialing long-distance telephone systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681532A (en) * 1969-01-15 1972-08-01 Int Standard Electric Corp Restricted dial telephone station

Also Published As

Publication number Publication date
NL36070C (zh)
GB389661A (en) 1933-03-23
DE641077C (de) 1937-01-19

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