[go: up one dir, main page]

BE454900A - - Google Patents

Info

Publication number
BE454900A
BE454900A BE454900DA BE454900A BE 454900 A BE454900 A BE 454900A BE 454900D A BE454900D A BE 454900DA BE 454900 A BE454900 A BE 454900A
Authority
BE
Belgium
Application number
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.)
Publication of BE454900A publication Critical patent/BE454900A/xx

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B9/00—Fastening rails on sleepers, or the like
    • E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
    • E01B9/28—Fastening on wooden or concrete sleepers or on masonry with clamp members
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q1/00—Details of selecting apparatus or arrangements
    • H04Q1/18—Electrical details
    • H04Q1/30—Signalling arrangements; Manipulation of signalling currents
    • H04Q1/44—Signalling arrangements; Manipulation of signalling currents using alternate current
    • H04Q1/444—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies
    • H04Q1/45—Signalling arrangements; Manipulation of signalling currents using alternate current with voice-band signalling frequencies using multi-frequency signalling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
BE454900D 1943-04-09 BE454900A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR981442T 1943-04-09

Publications (1)

Publication Number Publication Date
BE454900A true BE454900A (fr)

Family

ID=9532817

Family Applications (1)

Application Number Title Priority Date Filing Date
BE454900D BE454900A (fr) 1943-04-09

Country Status (2)

Country Link
BE (1) BE454900A (fr)
FR (1) FR981442A (fr)

Also Published As

Publication number Publication date
FR981442A (fr) 1951-05-25

Similar Documents

Publication Publication Date Title
BE457543R (fr)
BE454900A (fr)
BE448951A (fr)
BE449283A (fr)
BE452521A (fr)
BE453295A (fr)
BE453375A (fr)
BE454271A (fr)
BE454637A (fr)
BE454640A (fr)
BE455068A (fr)
BE455316A (fr)
BE455420A (fr)
BE455526A (fr)
BE455544A (fr)
BE455545A (fr)
BE455595A (fr)
BE455596A (fr)
BE455755A (fr)
BE455832A (fr)
BE455910A (fr)
BE456091A (fr)
BE456283A (fr)
BE456412A (fr)
BE456413A (fr)