FR503294A - Further training in telephone devices - Google Patents

Further training in telephone devices

Info

Publication number
FR503294A
FR503294A FR503294A FR503294DA FR503294A FR 503294 A FR503294 A FR 503294A FR 503294 A FR503294 A FR 503294A FR 503294D A FR503294D A FR 503294DA FR 503294 A FR503294 A FR 503294A
Authority
FR
France
Prior art keywords
further training
telephone devices
telephone
devices
training
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
FR503294A
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR503294A publication Critical patent/FR503294A/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
    • H04M1/02—Constructional features of telephone sets

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
FR503294A 1919-02-08 1919-08-28 Further training in telephone devices Expired FR503294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB315819A GB139861A (en) 1919-02-08 1919-02-08 Improvements in telephone instruments

Publications (1)

Publication Number Publication Date
FR503294A true FR503294A (en) 1920-06-07

Family

ID=9753024

Family Applications (1)

Application Number Title Priority Date Filing Date
FR503294A Expired FR503294A (en) 1919-02-08 1919-08-28 Further training in telephone devices

Country Status (2)

Country Link
FR (1) FR503294A (en)
GB (1) GB139861A (en)

Also Published As

Publication number Publication date
GB139861A (en) 1920-03-18

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