FR71946E - Telephone and signaling device for mine shafts and similar installations - Google Patents

Telephone and signaling device for mine shafts and similar installations

Info

Publication number
FR71946E
FR71946E FR71946DA FR71946E FR 71946 E FR71946 E FR 71946E FR 71946D A FR71946D A FR 71946DA FR 71946 E FR71946 E FR 71946E
Authority
FR
France
Prior art keywords
telephone
signaling device
mine shafts
similar installations
installations
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)
Inventor
Richard Guenther
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR71946E publication Critical patent/FR71946E/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/60—Systems for communication between relatively movable stations, e.g. for communication with lift

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Near-Field Transmission Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Indicating And Signalling Devices For Elevators (AREA)
FR71946D 1955-11-24 1956-12-06 Telephone and signaling device for mine shafts and similar installations Expired FR71946E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE808541X 1955-11-24
DEST10627A DE1041396B (en) 1955-11-24 1955-12-08 Arrangement for signal transmission in shaft conveyor systems between a fixed point and a signal transceiver located on the conveyor basket

Publications (1)

Publication Number Publication Date
FR71946E true FR71946E (en) 1960-03-14

Family

ID=25948847

Family Applications (2)

Application Number Title Priority Date Filing Date
FR1164628D Expired FR1164628A (en) 1955-11-24 1956-11-23 Telephone and signaling device for mine shafts and similar installations
FR71946D Expired FR71946E (en) 1955-11-24 1956-12-06 Telephone and signaling device for mine shafts and similar installations

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR1164628D Expired FR1164628A (en) 1955-11-24 1956-11-23 Telephone and signaling device for mine shafts and similar installations

Country Status (4)

Country Link
BE (4) BE553188A (en)
DE (1) DE1041396B (en)
FR (2) FR1164628A (en)
GB (2) GB808541A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE280731C (en) *
AT65741B (en) * 1911-08-29 1914-07-25 Studien Ges Fuer Drahtlose Gru Conveyor basket telephone and telegraph.

Also Published As

Publication number Publication date
FR1164628A (en) 1958-10-13
BE562295A (en)
BE553188A (en)
DE1041396B (en) 1958-10-16
GB808541A (en) 1959-02-04
BE562567A (en)
BE552847A (en)
GB809524A (en) 1959-02-25

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