CH449875A - Device for keeping a child in relative immobility in a sitting position - Google Patents
Device for keeping a child in relative immobility in a sitting positionInfo
- Publication number
- CH449875A CH449875A CH465866A CH465866A CH449875A CH 449875 A CH449875 A CH 449875A CH 465866 A CH465866 A CH 465866A CH 465866 A CH465866 A CH 465866A CH 449875 A CH449875 A CH 449875A
- Authority
- CH
- Switzerland
- Prior art keywords
- child
- keeping
- sitting position
- relative immobility
- immobility
- Prior art date
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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/34—Stereoscopes providing a stereoscopic pair of separated images corresponding to parallactically displaced views of the same object, e.g. 3D slide viewers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR12021 | 1965-04-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH449875A true CH449875A (en) | 1968-01-15 |
Family
ID=8575689
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH465866A CH449875A (en) | 1965-04-06 | 1966-03-31 | Device for keeping a child in relative immobility in a sitting position |
Country Status (3)
Country | Link |
---|---|
BE (1) | BE678834A (en) |
CH (1) | CH449875A (en) |
FR (1) | FR1557607A (en) |
-
1965
- 1965-04-06 FR FR12021A patent/FR1557607A/fr not_active Expired
-
1966
- 1966-03-31 CH CH465866A patent/CH449875A/en unknown
- 1966-04-01 BE BE678834D patent/BE678834A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
FR1557607A (en) | 1969-02-21 |
BE678834A (en) | 1966-10-03 |
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