FR742328A - - Google Patents

Info

Publication number
FR742328A
FR742328A FR742328DA FR742328A FR 742328 A FR742328 A FR 742328A FR 742328D A FR742328D A FR 742328DA FR 742328 A FR742328 A FR 742328A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR742328A publication Critical patent/FR742328A/fr
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B61RAILWAYS
    • B61LGUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/20Audible signals, e.g. detonator audible signalling
    • B61L5/22Devices for initiating the release of detonators in a certain position of a signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR742328D Expired FR742328A (xx)

Publications (1)

Publication Number Publication Date
FR742328A true FR742328A (xx) 1933-03-04

Family

ID=1546740

Family Applications (1)

Application Number Title Priority Date Filing Date
FR742328D Expired FR742328A (xx)

Country Status (1)

Country Link
FR (1) FR742328A (xx)

Similar Documents

Publication Publication Date Title
FR741157A (xx)
FR741535A (xx)
FR741043A (xx)
BE400255R (xx)
FR742959A (xx)
FR743621A (xx)
FR742328A (xx)
FR742536A (xx)
FR742065A (xx)
FR742033A (xx)
FR741225A (xx)
FR741125A (xx)
BE395388A (xx)
BE395128A (xx)
BE401797A (xx)
BE401006A (xx)
BE398056A (xx)
BE395712A (xx)
BE395669A (xx)
BE395662A (xx)
BE395502A (xx)
BE395493A (xx)
BE395431A (xx)
BE395422A (xx)
BE391463A (xx)