NL57680C - - Google Patents

Info

Publication number
NL57680C
NL57680C NL57680DA NL57680C NL 57680 C NL57680 C NL 57680C NL 57680D A NL57680D A NL 57680DA NL 57680 C NL57680 C NL 57680C
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 NL57680C publication Critical patent/NL57680C/xx

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
    • G01S11/02—Systems for determining distance or velocity not using reflection or reradiation using radio waves
    • G01S11/023—Systems for determining distance or velocity not using reflection or reradiation using radio waves using impedance elements varying with distance
NL57680D 1939-02-07 NL57680C (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2230537X 1939-02-07

Publications (1)

Publication Number Publication Date
NL57680C true NL57680C (xx)

Family

ID=7991361

Family Applications (1)

Application Number Title Priority Date Filing Date
NL57680D NL57680C (xx) 1939-02-07

Country Status (3)

Country Link
US (1) US2230537A (xx)
FR (1) FR870996A (xx)
NL (1) NL57680C (xx)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB563469A (en) * 1942-05-06 1944-08-16 Gen Electric Co Ltd Improvements in blind-landing devices for aircraft
US4585209A (en) * 1983-10-27 1986-04-29 Harry E. Aine Miniature valve and method of making same

Also Published As

Publication number Publication date
FR870996A (fr) 1942-04-01
US2230537A (en) 1941-02-04

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