NL186314B - PROCESS FOR THE PREPARATION OF CYCLOBUTANONES OR CYCLOBUTANONES. - Google Patents
PROCESS FOR THE PREPARATION OF CYCLOBUTANONES OR CYCLOBUTANONES.Info
- Publication number
- NL186314B NL186314B NLAANVRAGE7510373,A NL186314DA NL186314B NL 186314 B NL186314 B NL 186314B NL 186314D A NL186314D A NL 186314DA NL 186314 B NL186314 B NL 186314B
- Authority
- NL
- Netherlands
- Prior art keywords
- cyclobutanones
- preparation
- 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
- G03B7/00—Control of exposure by setting shutters, diaphragms or filters, separately or conjointly
- G03B7/04—Control effected by hand adjustment of a member that senses indication of a pointer of a built- in light-sensitive device, e.g. by restoring point to a fixed associated reference mark
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/005—Diaphragms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Microscoopes, Condenser (AREA)
- Spectrometry And Color Measurement (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEA18057A DE1008017B (en) | 1953-05-21 | 1953-05-21 | Aperture device for photometer |
Publications (1)
Publication Number | Publication Date |
---|---|
NL186314B true NL186314B (en) |
Family
ID=6924056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NLAANVRAGE7510373,A NL186314B (en) | 1953-05-21 | PROCESS FOR THE PREPARATION OF CYCLOBUTANONES OR CYCLOBUTANONES. |
Country Status (7)
Country | Link |
---|---|
AT (1) | AT183976B (en) |
CH (1) | CH325521A (en) |
DE (1) | DE1008017B (en) |
FR (1) | FR1106713A (en) |
GB (1) | GB783607A (en) |
IT (1) | IT516249A (en) |
NL (1) | NL186314B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111846954A (en) * | 2020-09-02 | 2020-10-30 | 钱丹 | Variable-pitch material sucking mechanism |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE610294C (en) * | 1935-03-07 | Gauthier Gmbh A | Photographic lens shutter with light meter | |
DE608427C (en) * | 1935-01-23 | Gauthier Gmbh A | Lens shutter with light meter | |
DE582033C (en) * | 1929-06-09 | 1933-08-07 | Gauthier Gmbh A | Photographic lens shutter with light meter |
DE704313C (en) * | 1935-09-01 | 1941-03-27 | Metrawatt Akt Ges | Photoelectric light meter with swiveling measuring range aperture |
DE702924C (en) * | 1938-07-24 | 1941-02-25 | Fritz Reich Dipl Ing | Optical exposure meter on photographic cameras |
DE852653C (en) * | 1949-09-24 | 1952-10-16 | Egon Fischer | Attachment for photographic or cinematographic cameras, preferably for those with a viewfinder lens |
-
0
- NL NLAANVRAGE7510373,A patent/NL186314B/en unknown
- IT IT516249D patent/IT516249A/it unknown
-
1953
- 1953-05-21 DE DEA18057A patent/DE1008017B/en active Pending
-
1954
- 1954-01-20 GB GB176354A patent/GB783607A/en not_active Expired
- 1954-04-21 CH CH325521D patent/CH325521A/en unknown
- 1954-05-14 AT AT183976D patent/AT183976B/en active
- 1954-05-17 FR FR1106713D patent/FR1106713A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
IT516249A (en) | |
CH325521A (en) | 1957-11-15 |
AT183976B (en) | 1955-12-10 |
GB783607A (en) | 1957-09-25 |
DE1008017B (en) | 1957-05-09 |
FR1106713A (en) | 1955-12-22 |
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