FR679437A - Signaling process - Google Patents

Signaling process

Info

Publication number
FR679437A
FR679437A FR679437DA FR679437A FR 679437 A FR679437 A FR 679437A FR 679437D A FR679437D A FR 679437DA FR 679437 A FR679437 A FR 679437A
Authority
FR
France
Prior art keywords
signaling process
signaling
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
Pedro Ossul
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 filed Critical
Application granted granted Critical
Publication of FR679437A publication Critical patent/FR679437A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR679437D 1929-07-27 1929-07-27 Signaling process Expired FR679437A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR679437T 1929-07-27

Publications (1)

Publication Number Publication Date
FR679437A true FR679437A (en) 1930-04-12

Family

ID=9021678

Family Applications (1)

Application Number Title Priority Date Filing Date
FR679437D Expired FR679437A (en) 1929-07-27 1929-07-27 Signaling process

Country Status (1)

Country Link
FR (1) FR679437A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015353B (en) * 1955-07-16 1957-09-05 Fruengel Frank Dr Ing Pulse-optical light barrier automatically switchable to ultrasound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1015353B (en) * 1955-07-16 1957-09-05 Fruengel Frank Dr Ing Pulse-optical light barrier automatically switchable to ultrasound

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