FR1011895A - Device for positive examination of negative images - Google Patents

Device for positive examination of negative images

Info

Publication number
FR1011895A
FR1011895A FR1011895DA FR1011895A FR 1011895 A FR1011895 A FR 1011895A FR 1011895D A FR1011895D A FR 1011895DA FR 1011895 A FR1011895 A FR 1011895A
Authority
FR
France
Prior art keywords
negative images
positive examination
examination
positive
images
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
Paul Paulin
Andre Le Gall
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 FR1011895A publication Critical patent/FR1011895A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/10—Projectors with built-in or built-on screen
    • G03B21/11—Projectors with built-in or built-on screen for microfilm reading
FR1011895D 1949-04-13 1949-04-13 Device for positive examination of negative images Expired FR1011895A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1011895T 1949-04-13

Publications (1)

Publication Number Publication Date
FR1011895A true FR1011895A (en) 1952-07-01

Family

ID=9570336

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1011895D Expired FR1011895A (en) 1949-04-13 1949-04-13 Device for positive examination of negative images

Country Status (1)

Country Link
FR (1) FR1011895A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097176B (en) * 1955-02-17 1961-01-12 Otto Meerkamm Method and device for making a photographic negative visible as a positive on a luminescent screen covered with extinguishing phosphors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097176B (en) * 1955-02-17 1961-01-12 Otto Meerkamm Method and device for making a photographic negative visible as a positive on a luminescent screen covered with extinguishing phosphors

Similar Documents

Publication Publication Date Title
FR1053890A (en) Artificial respiration apparatus
FR963929A (en) Inspection device
FR1021565A (en) Device for measuring small thicknesses
FR1011895A (en) Device for positive examination of negative images
FR1034384A (en) Device for artificial respiration
FR1013859A (en) Image transformer tube
FR993345A (en) Electrolysis apparatus
FR1020627A (en) Device for artificial respiration
FR981119A (en) Cinematographic apparatus
FR1058753A (en) Apparatus for observing changing images
FR1238203A (en) Apparatus for artificial respiration of patients
FR1006109A (en) Device for inducing artificial respiration
FR1001859A (en) Evaporation apparatus
FR1003994A (en) Lifting device for invalids
FR994497A (en) Apparatus for auscultation of engines
FR1055781A (en) Apparatus for photographic reproduction of documents
FR985531A (en) Image transformation device
FR1105394A (en) X-ray examination device
FR951133A (en) Advanced device to induce artificial respiration
FR1032410A (en) Hydrotherapy device
FR941288A (en) Observation hive
FR1004168A (en) Device for observing temperature differences
FR1004369A (en) Device for observing and adjusting periodic phenomena
FR997464A (en) Sterilization device
FR1017331A (en) Device for artificial insemination