FR402195A - Improvements to dictographs - Google Patents

Improvements to dictographs

Info

Publication number
FR402195A
FR402195A FR402195A FR402195DA FR402195A FR 402195 A FR402195 A FR 402195A FR 402195 A FR402195 A FR 402195A FR 402195D A FR402195D A FR 402195DA FR 402195 A FR402195 A FR 402195A
Authority
FR
France
Prior art keywords
dictographs
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
FR402195A
Other languages
French (fr)
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.)
GEN ACOUSTIC Co
Original Assignee
GEN ACOUSTIC Co
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 GEN ACOUSTIC Co filed Critical GEN ACOUSTIC Co
Application granted granted Critical
Publication of FR402195A publication Critical patent/FR402195A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/002—Arrangements for interconnection not involving centralised switching with subscriber controlled access to a line, i.e. key telephone systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
FR402195A 1909-04-20 1909-04-19 Improvements to dictographs Expired FR402195A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB190909350T 1909-04-20

Publications (1)

Publication Number Publication Date
FR402195A true FR402195A (en) 1909-09-30

Family

ID=32444008

Family Applications (1)

Application Number Title Priority Date Filing Date
FR402195A Expired FR402195A (en) 1909-04-20 1909-04-19 Improvements to dictographs

Country Status (3)

Country Link
DE (1) DE234801C (en)
FR (1) FR402195A (en)
GB (1) GB190909350A (en)

Also Published As

Publication number Publication date
DE234801C (en)
GB190909350A (en) 1909-09-30

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