NL57785C - - Google Patents

Info

Publication number
NL57785C
NL57785C NL57785DA NL57785C NL 57785 C NL57785 C NL 57785C NL 57785D A NL57785D A NL 57785DA NL 57785 C NL57785 C NL 57785C
Authority
NL
Netherlands
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 NL57785C publication Critical patent/NL57785C/xx

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/01—Detecting movement of traffic to be counted or controlled
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
NL57785D 1938-06-04 NL57785C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE223873X 1938-06-04

Publications (1)

Publication Number Publication Date
NL57785C true NL57785C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Family

ID=3866145

Family Applications (1)

Application Number Title Priority Date Filing Date
NL57785D NL57785C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1938-06-04

Country Status (5)

Country Link
US (1) US2300613A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE428437A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH223873A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR855566A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL57785C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521683A (en) * 1944-06-29 1950-09-12 Eastern Ind Inc Traffic detection apparatus
US3235738A (en) * 1962-05-14 1966-02-15 Sensi Tronics Inc Photoelectric apparatus for detecting objects in an area

Also Published As

Publication number Publication date
BE428437A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH223873A (fr) 1942-10-15
FR855566A (fr) 1940-05-15
US2300613A (en) 1942-11-03

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