FR1040819A - Tracking device - Google Patents

Tracking device

Info

Publication number
FR1040819A
FR1040819A FR1040819DA FR1040819A FR 1040819 A FR1040819 A FR 1040819A FR 1040819D A FR1040819D A FR 1040819DA FR 1040819 A FR1040819 A FR 1040819A
Authority
FR
France
Prior art keywords
tracking device
tracking
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
Andre-Henri Mirau
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 FR1040819A publication Critical patent/FR1040819A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/32—Fiducial marks and measuring scales within the optical system
FR1040819D 1951-07-02 1951-07-02 Tracking device Expired FR1040819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1040819T 1951-07-02

Publications (1)

Publication Number Publication Date
FR1040819A true FR1040819A (en) 1953-10-19

Family

ID=9589139

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1040819D Expired FR1040819A (en) 1951-07-02 1951-07-02 Tracking device

Country Status (1)

Country Link
FR (1) FR1040819A (en)

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