FR464085A - Locking system for phones - Google Patents

Locking system for phones

Info

Publication number
FR464085A
FR464085A FR464085A FR464085DA FR464085A FR 464085 A FR464085 A FR 464085A FR 464085 A FR464085 A FR 464085A FR 464085D A FR464085D A FR 464085DA FR 464085 A FR464085 A FR 464085A
Authority
FR
France
Prior art keywords
phones
locking system
locking
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
FR464085A
Other languages
French (fr)
Inventor
William Alden Morse
Alice Melora Morse
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.)
WILLIAM ALDEN MORSE
Original Assignee
WILLIAM ALDEN MORSE
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 WILLIAM ALDEN MORSE filed Critical WILLIAM ALDEN MORSE
Application granted granted Critical
Publication of FR464085A publication Critical patent/FR464085A/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
    • H04M1/68—Circuit arrangements for preventing eavesdropping
    • H04M1/70—Lock-out or secrecy arrangements in party-line systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR464085A 1913-08-09 1913-10-14 Locking system for phones Expired FR464085A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191318160T 1913-08-09

Publications (1)

Publication Number Publication Date
FR464085A true FR464085A (en) 1914-03-12

Family

ID=34359795

Family Applications (1)

Application Number Title Priority Date Filing Date
FR464085A Expired FR464085A (en) 1913-08-09 1913-10-14 Locking system for phones

Country Status (2)

Country Link
FR (1) FR464085A (en)
GB (1) GB191318160A (en)

Also Published As

Publication number Publication date
GB191318160A (en) 1914-03-19

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