FR888833A - Differential meter for blind navigation - Google Patents

Differential meter for blind navigation

Info

Publication number
FR888833A
FR888833A FR888833DA FR888833A FR 888833 A FR888833 A FR 888833A FR 888833D A FR888833D A FR 888833DA FR 888833 A FR888833 A FR 888833A
Authority
FR
France
Prior art keywords
differential meter
blind navigation
blind
navigation
meter
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
Jean Denis
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 FR888833A publication Critical patent/FR888833A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
FR888833D 1941-03-08 1941-03-08 Differential meter for blind navigation Expired FR888833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR888833T 1941-03-08

Publications (1)

Publication Number Publication Date
FR888833A true FR888833A (en) 1943-12-23

Family

ID=9376906

Family Applications (1)

Application Number Title Priority Date Filing Date
FR888833D Expired FR888833A (en) 1941-03-08 1941-03-08 Differential meter for blind navigation

Country Status (1)

Country Link
FR (1) FR888833A (en)

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