FR599019A - Improvements to lighting fixtures giving the appearance of daylight - Google Patents

Improvements to lighting fixtures giving the appearance of daylight

Info

Publication number: FR599019A
Authority: FR; France
Prior art keywords: daylight; giving; appearance; lighting fixtures; fixtures
Prior art date: 1925-05-29
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

Inventor

Arthur Reginald Saint-Clair

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.)

1925-05-29

Filing date

1925-05-29

Publication date

1925-12-31

1925-05-29 Application filed filed Critical

1925-12-31 Application granted granted Critical

1925-12-31 Publication of FR599019A publication Critical patent/FR599019A/en

Status Expired legal-status Critical Current

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
- F21V9/02—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters for simulating daylight

Landscapes

Physics & Mathematics (AREA)
Spectroscopy & Molecular Physics (AREA)
Engineering & Computer Science (AREA)
General Engineering & Computer Science (AREA)

FR599019D 1925-05-29 1925-05-29 Improvements to lighting fixtures giving the appearance of daylight Expired FR599019A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
FR599019T		1925-05-29

Publications (1)

Publication Number	Publication Date
FR599019A true FR599019A (en)	1925-12-31

Family

ID=8969305

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR599019D Expired FR599019A (en)	1925-05-29	1925-05-29	Improvements to lighting fixtures giving the appearance of daylight

Country Status (1)

Country	Link
FR (1)	FR599019A (en)

1925
- 1925-05-29 FR FR599019D patent/FR599019A/en not_active Expired

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