IT1076556B - Elemento di copertura schermante dalla radiazione solare,particolarmente adatto alle applicazioni della refrigerazione per irraggiamento - Google Patents

Elemento di copertura schermante dalla radiazione solare,particolarmente adatto alle applicazioni della refrigerazione per irraggiamento

Info

Publication number
IT1076556B
IT1076556B IT19361/77A IT1936177A IT1076556B IT 1076556 B IT1076556 B IT 1076556B IT 19361/77 A IT19361/77 A IT 19361/77A IT 1936177 A IT1936177 A IT 1936177A IT 1076556 B IT1076556 B IT 1076556B
Authority
IT
Italy
Prior art keywords
irradiance
refrigeration
applications
particularly suitable
solar radiation
Prior art date
Application number
IT19361/77A
Other languages
English (en)
Italian (it)
Inventor
Vittorio Silvestrini
Mario Peraldo
Enrico Monza
Original Assignee
Montedison Spa
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
Priority to IT19361/77A priority Critical patent/IT1076556B/it
Application filed by Montedison Spa filed Critical Montedison Spa
Priority to DE19782801665 priority patent/DE2801665A1/de
Priority to EG25/78A priority patent/EG13011A/xx
Priority to MX172056A priority patent/MX150755A/es
Priority to BR7800244A priority patent/BR7800244A/pt
Priority to FR7801227A priority patent/FR2377646A1/fr
Priority to GB1904/78A priority patent/GB1598017A/en
Priority to IL53828A priority patent/IL53828A/xx
Priority to AU32490/78A priority patent/AU514902B2/en
Priority to JP282878A priority patent/JPS53114885A/ja
Priority to US06/059,598 priority patent/US4323619A/en
Application granted granted Critical
Publication of IT1076556B publication Critical patent/IT1076556B/it

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B23/00—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect
    • F25B23/003—Machines, plants or systems, with a single mode of operation not covered by groups F25B1/00 - F25B21/00, e.g. using selective radiation effect using selective radiation effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/208—Filters for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/102—Oxide or hydroxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/4026—Coloured within the layer by addition of a colorant, e.g. pigments, dyes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2323/00—Polyalkenes
    • B32B2323/04—Polyethylene
    • B32B2323/043—HDPE, i.e. high density polyethylene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/913—Material designed to be responsive to temperature, light, moisture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S62/00—Refrigeration
    • Y10S62/01—Radiant cooling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24893—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material
    • Y10T428/24901—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] including particulate material including coloring matter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/2495—Thickness [relative or absolute]
    • Y10T428/24967—Absolute thicknesses specified
    • Y10T428/24975—No layer or component greater than 5 mils thick
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/256—Heavy metal or aluminum or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y10T428/258—Alkali metal or alkaline earth metal or compound thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/268—Monolayer with structurally defined element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31—Surface property or characteristic of web, sheet or block
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31855—Of addition polymer from unsaturated monomers
    • Y10T428/31909—Next to second addition polymer from unsaturated monomers
    • Y10T428/31913—Monoolefin polymer

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Laminated Bodies (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Building Environments (AREA)
IT19361/77A 1977-01-17 1977-01-17 Elemento di copertura schermante dalla radiazione solare,particolarmente adatto alle applicazioni della refrigerazione per irraggiamento IT1076556B (it)

Priority Applications (11)

Application Number Priority Date Filing Date Title
IT19361/77A IT1076556B (it) 1977-01-17 1977-01-17 Elemento di copertura schermante dalla radiazione solare,particolarmente adatto alle applicazioni della refrigerazione per irraggiamento
EG25/78A EG13011A (en) 1977-01-17 1978-01-16 Covering element screening of the solar radiation for the applications in the refrigeration by radiation
MX172056A MX150755A (es) 1977-01-17 1978-01-16 Elemento refrigerante mejorado de cubierta para refrigeradores o habitaciones
BR7800244A BR7800244A (pt) 1977-01-17 1978-01-16 Elemento de cobertura que possui propriedades oticas seletivas,particularmente adequado como filtro protetor para dispositivos de refrigeracao por radiacao
DE19782801665 DE2801665A1 (de) 1977-01-17 1978-01-16 Abdeckelement mit selektiven optischen eigenschaften
FR7801227A FR2377646A1 (fr) 1977-01-17 1978-01-17 Element couvrant protegeant des radiations solaires utilisable dans la refrigeration par rayonnement
GB1904/78A GB1598017A (en) 1977-01-17 1978-01-17 Covering material having selective solar radiation properties for allowing an object or a spare to cool by radiation
IL53828A IL53828A (en) 1977-01-17 1978-01-17 Covering element for protection from solar radiation, particularly for refrigeration-by-radiation devices
AU32490/78A AU514902B2 (en) 1977-01-17 1978-01-17 Covering element screening offthe solar radiation
JP282878A JPS53114885A (en) 1977-01-17 1978-01-17 Covering material which insulates sunlight for cooling due to radiation
US06/059,598 US4323619A (en) 1977-01-17 1979-07-23 Covering element screening off the solar radiation for the applications in the refrigeration by radiation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT19361/77A IT1076556B (it) 1977-01-17 1977-01-17 Elemento di copertura schermante dalla radiazione solare,particolarmente adatto alle applicazioni della refrigerazione per irraggiamento

Publications (1)

Publication Number Publication Date
IT1076556B true IT1076556B (it) 1985-04-27

Family

ID=11157035

Family Applications (1)

Application Number Title Priority Date Filing Date
IT19361/77A IT1076556B (it) 1977-01-17 1977-01-17 Elemento di copertura schermante dalla radiazione solare,particolarmente adatto alle applicazioni della refrigerazione per irraggiamento

Country Status (11)

Country Link
US (1) US4323619A (OSRAM)
JP (1) JPS53114885A (OSRAM)
AU (1) AU514902B2 (OSRAM)
BR (1) BR7800244A (OSRAM)
DE (1) DE2801665A1 (OSRAM)
EG (1) EG13011A (OSRAM)
FR (1) FR2377646A1 (OSRAM)
GB (1) GB1598017A (OSRAM)
IL (1) IL53828A (OSRAM)
IT (1) IT1076556B (OSRAM)
MX (1) MX150755A (OSRAM)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271358A (en) * 1979-11-13 1981-06-02 Frank Schwarz Selective infrared detector
FR2511762A1 (fr) * 1981-08-24 1983-02-25 Sorelec Dispositif a structure gonflable pour refroidir un fluide caloporteur
FR2521707A1 (fr) * 1982-02-12 1983-08-19 Sorelec Dispositif pour le refroidissement d'un fluide caloporteur
JPS6062515A (ja) * 1983-09-14 1985-04-10 Kikusui Kagaku Kogyo Kk 放射冷却壁，屋根材
JPS6098036A (ja) * 1983-11-01 1985-06-01 菊水化学工業株式会社 建築物の放射冷却法
JPS60152750A (ja) * 1984-01-18 1985-08-12 菊水化学工業株式会社 建築物の放射冷却法
US4586350A (en) * 1984-09-14 1986-05-06 The United States Of America As Represented By The United States Department Of Energy Selective radiative cooling with MgO and/or LiF layers
JPS63316801A (ja) * 1987-06-19 1988-12-26 Sumitomo Chem Co Ltd 遠赤外線選択透過性フレネルレンズ及びそれを用いて人体を検知する方法
CA2039109A1 (en) * 1990-04-23 1991-10-24 David B. Chang Selective emissivity coatings for interior temperature reduction of an enclosure
NL1002394C2 (nl) * 1995-02-21 1996-12-31 Hyplast Nv Energiescherm.
US20050167612A1 (en) * 2004-02-02 2005-08-04 Aubrey Jaffer Passive fluorescent cooling
WO2008095330A1 (fr) * 2007-01-31 2008-08-14 Chen, Dongdong Dispositif de refroidissement et son utilisation
US20080203329A1 (en) * 2007-02-28 2008-08-28 Charles Albert Cody Method and devices to control global warming
EP2101119A1 (en) * 2008-03-11 2009-09-16 Helianthos B.V. Roof element
US20110151244A1 (en) * 2008-09-29 2011-06-23 E.I. Du Pont De Nemours And Company Coating compositions having improved solar reflectivity and uv protection
US9709349B2 (en) * 2012-11-15 2017-07-18 The Board Of Trustees Of The Leland Stanford Junior University Structures for radiative cooling
US20160268464A1 (en) 2013-11-13 2016-09-15 The Board Of Trustees Of The Leland Stanford Junior University Illumination and radiative cooling
US10088251B2 (en) * 2014-05-21 2018-10-02 The Board Of Trustees Of The Leland Stanford Junior University Radiative cooling with solar spectrum reflection
DE202016106865U1 (de) * 2016-12-09 2018-03-12 Tridonic Gmbh & Co Kg Sensor-Anordnung zum Erkennen einer Bewegung und/oder einer Anwesenheit einer Person
CA2965830A1 (en) * 2017-05-01 2018-11-01 Huazi Lin Solar energy garage door and its unit
WO2020116111A1 (ja) * 2018-12-04 2020-06-11 富士フイルム株式会社 多層構造体
EP3903044A1 (en) 2018-12-27 2021-11-03 Skycool Systems, Inc. Cooling panel system
AU2020257428B2 (en) 2019-04-17 2026-01-29 SkyCool Systems, Inc. Radiative cooling systems
CN113068406B (zh) * 2019-10-31 2022-11-22 高丽大学校产学协力团 辐射冷却元件及其制作方法
US12492309B2 (en) 2022-05-20 2025-12-09 University Of South Florida Spectrally selective zinc oxide particles and methods of making thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3043112A (en) * 1959-02-09 1962-07-10 Commw Scient Ind Res Org Method and means for producing refrigeration by selective radiation
US3154139A (en) * 1962-06-11 1964-10-27 Armstrong Cork Co One-way heat flow panel
FR82838E (fr) * 1962-12-27 1964-04-24 Centre Nat Rech Scient Dispositif pour l'abaissement de la température d'un corps par son propre rayonnement et application à la production de froid
NL6501260A (OSRAM) * 1964-02-13 1965-08-16
DE2330700C2 (de) * 1972-06-23 1983-04-14 Nikolaus 7148 Remseck Laing Wandelelement zur Speicherung von Wärme durch Aufnahme von Sonnenenergie und/oder zur Abstrahlung von Überschußwärme im infraroten Bereich des Spektrums

Also Published As

Publication number Publication date
EG13011A (en) 1980-03-31
MX150755A (es) 1984-07-12
BR7800244A (pt) 1978-09-05
JPS53114885A (en) 1978-10-06
FR2377646A1 (fr) 1978-08-11
GB1598017A (en) 1981-09-16
AU3249078A (en) 1979-07-26
IL53828A0 (en) 1978-04-30
AU514902B2 (en) 1981-03-05
US4323619A (en) 1982-04-06
IL53828A (en) 1980-09-16
DE2801665A1 (de) 1978-07-20
FR2377646B1 (OSRAM) 1982-03-26

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