FR30806E - Automatic telephone system - Google Patents

Automatic telephone system

Info

Publication number
FR30806E
FR30806E FR30806DA FR30806E FR 30806 E FR30806 E FR 30806E FR 30806D A FR30806D A FR 30806DA FR 30806 E FR30806 E FR 30806E
Authority
FR
France
Prior art keywords
telephone system
automatic telephone
automatic
telephone
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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR30806E publication Critical patent/FR30806E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges
FR30806D 1924-05-19 1925-05-18 Automatic telephone system Expired FR30806E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US476279XA 1924-05-19 1924-05-19

Publications (1)

Publication Number Publication Date
FR30806E true FR30806E (en) 1926-10-02

Family

ID=21950023

Family Applications (4)

Application Number Title Priority Date Filing Date
FR600994D Expired FR600994A (en) 1924-05-19
FR30806D Expired FR30806E (en) 1924-05-19 1925-05-18 Automatic telephone system
FR32350D Expired FR32350E (en) 1924-05-19 1926-08-04 Automatic telephone system
FR32351D Expired FR32351E (en) 1924-05-19 1926-08-05 Automatic telephone system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR600994D Expired FR600994A (en) 1924-05-19

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR32350D Expired FR32350E (en) 1924-05-19 1926-08-04 Automatic telephone system
FR32351D Expired FR32351E (en) 1924-05-19 1926-08-05 Automatic telephone system

Country Status (4)

Country Link
US (1) US1681913A (en)
DE (1) DE476279C (en)
FR (4) FR30806E (en)
GB (1) GB263210A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919238A1 (en) * 1989-06-13 1990-12-20 Voest Alpine Ind Anlagen RINSING DEVICE FOR A METALLURGICAL VESSEL

Also Published As

Publication number Publication date
FR32351E (en) 1927-11-28
FR32350E (en) 1927-11-28
FR600994A (en) 1926-02-19
US1681913A (en) 1928-08-21
GB263210A (en)
DE476279C (en) 1929-05-21

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