GB374822A - Safety device for automatic telephone apparatus - Google Patents

Safety device for automatic telephone apparatus

Info

Publication number
GB374822A
GB374822A GB36987/30A GB3698730A GB374822A GB 374822 A GB374822 A GB 374822A GB 36987/30 A GB36987/30 A GB 36987/30A GB 3698730 A GB3698730 A GB 3698730A GB 374822 A GB374822 A GB 374822A
Authority
GB
United Kingdom
Prior art keywords
hook
rod
dec
fixed
casing
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
GB36987/30A
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.)
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
Publication of GB374822A publication Critical patent/GB374822A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M17/00—Prepayment of wireline communication systems, wireless communication systems or telephone systems
    • H04M17/02—Coin-freed or check-freed systems, e.g. mobile- or card-operated phones, public telephones or booths
    • H04M17/026—Constructional features

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Burglar Alarm Systems (AREA)
GB36987/30A 1929-12-09 1930-12-08 Safety device for automatic telephone apparatus Expired GB374822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE374822X 1929-12-09

Publications (1)

Publication Number Publication Date
GB374822A true GB374822A (en) 1932-06-16

Family

ID=3868622

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36987/30A Expired GB374822A (en) 1929-12-09 1930-12-08 Safety device for automatic telephone apparatus

Country Status (3)

Country Link
BE (1) BE366093A (enrdf_load_stackoverflow)
FR (1) FR706846A (enrdf_load_stackoverflow)
GB (1) GB374822A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365554A (en) * 1964-10-16 1968-01-23 Bell Telephone Labor Inc Prevention of dialing by a telephone switchhook

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3365554A (en) * 1964-10-16 1968-01-23 Bell Telephone Labor Inc Prevention of dialing by a telephone switchhook

Also Published As

Publication number Publication date
BE366093A (enrdf_load_stackoverflow)
FR706846A (fr) 1931-06-30

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