FR547844A - - Google Patents

Info

Publication number
FR547844A
FR547844A FR547844DA FR547844A FR 547844 A FR547844 A FR 547844A FR 547844D A FR547844D A FR 547844DA FR 547844 A FR547844 A FR 547844A
Authority
FR
France
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)
Publication date
Application granted granted Critical
Publication of FR547844A publication Critical patent/FR547844A/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/02—Optical objectives with means for varying the magnification by changing, adding, or subtracting a part of the objective, e.g. convertible objective

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
FR547844D Expired FR547844A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Publications (1)

Publication Number Publication Date
FR547844A true FR547844A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1922-12-26

Family

ID=1538075

Family Applications (1)

Application Number Title Priority Date Filing Date
FR547844D Expired FR547844A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Country Status (1)

Country Link
FR (1) FR547844A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6400503B1 (en) * 2001-06-08 2002-06-04 Philip A. Mickelson Portable variable power zoom periscope

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6400503B1 (en) * 2001-06-08 2002-06-04 Philip A. Mickelson Portable variable power zoom periscope

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