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
Application number
NLAANVRAGE7510373,A
Other languages
Dutch (nl)
Original Assignee
Shell Int Research
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.)
Publication of NL186314B publication Critical patent/NL186314B/en

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)
NLAANVRAGE7510373,A 1953-05-21 PROCESS FOR THE PREPARATION OF CYCLOBUTANONES OR CYCLOBUTANONES. NL186314B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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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