IT1095302B - Impianto di conduzione per apparecchi di gas con scarico nell'atmosfera libera,in particolare per elementi di azionamento a motore - Google Patents
Impianto di conduzione per apparecchi di gas con scarico nell'atmosfera libera,in particolare per elementi di azionamento a motoreInfo
- Publication number
- IT1095302B IT1095302B IT22649/78A IT2264978A IT1095302B IT 1095302 B IT1095302 B IT 1095302B IT 22649/78 A IT22649/78 A IT 22649/78A IT 2264978 A IT2264978 A IT 2264978A IT 1095302 B IT1095302 B IT 1095302B
- Authority
- IT
- Italy
- Prior art keywords
- discharge
- motor drive
- drive elements
- free atmosphere
- conduction system
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/18—Construction facilitating manufacture, assembly, or disassembly
- F01N13/1838—Construction facilitating manufacture, assembly, or disassembly characterised by the type of connection between parts of exhaust or silencing apparatus, e.g. between housing and tubes, between tubes and baffles
- F01N13/1844—Mechanical joints
- F01N13/1855—Mechanical joints the connection being realised by using bolts, screws, rivets or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/003—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages
- F01N1/006—Silencing apparatus characterised by method of silencing by using dead chambers communicating with gas flow passages comprising at least one perforated tube extending from inlet to outlet of the silencer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
- F01N1/023—Helmholtz resonators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2260/00—Exhaust treating devices having provisions not otherwise provided for
- F01N2260/02—Exhaust treating devices having provisions not otherwise provided for for cooling the device
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2450/00—Methods or apparatus for fitting, inserting or repairing different elements
- F01N2450/24—Methods or apparatus for fitting, inserting or repairing different elements by bolts, screws, rivets or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/02—Tubes being perforated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/10—Tubes having non-circular cross section
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/18—Structure or shape of gas passages, pipes or tubes the axis of inlet or outlet tubes being other than the longitudinal axis of apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/24—Concentric tubes or tubes being concentric to housing, e.g. telescopically assembled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2470/00—Structure or shape of gas passages, pipes or tubes
- F01N2470/26—Tubes being formed by extrusion, drawing or rolling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/02—Two or more expansion chambers in series connected by means of tubes
- F01N2490/04—Two or more expansion chambers in series connected by means of tubes the gases flowing longitudinally from inlet to outlet only in one direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/14—Dead or resonance chambers connected to gas flow tube by relatively short side-tubes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/15—Plurality of resonance or dead chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/15—Plurality of resonance or dead chambers
- F01N2490/155—Plurality of resonance or dead chambers being disposed one after the other in flow direction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2490/00—Structure, disposition or shape of gas-chambers
- F01N2490/20—Chambers being formed inside the exhaust pipe without enlargement of the cross section of the pipe, e.g. resonance chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2510/00—Surface coverings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2530/00—Selection of materials for tubes, chambers or housings
- F01N2530/06—Aluminium or alloys 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Applications Claiming Priority (12)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772718944 DE2718944A1 (de) | 1975-03-12 | 1977-04-28 | Innenkuehlrohr mit einfachem und mehrfachem hohlkammermantel |
DE19772719513 DE2719513A1 (de) | 1977-05-02 | 1977-05-02 | Aluminiumleitungen mit einfachem hohlkammermantel insbesondere bei schalldaempfern von brennkraftmaschinen |
DE19772719634 DE2719634A1 (de) | 1977-05-02 | 1977-05-03 | Thermische abgasfuehrung |
DE19772720558 DE2720558A1 (de) | 1977-05-02 | 1977-05-07 | Thermische abgasfuehrung |
DE19772721956 DE2721956A1 (de) | 1977-05-03 | 1977-05-14 | Thermische abgasfuehrung |
DE19772722422 DE2722422A1 (de) | 1972-04-29 | 1977-05-18 | Thermische gasfuehrung im verbund keramik/metalle bei nachverbrennungsanlagen |
DE19772727728 DE2727728A1 (de) | 1977-04-28 | 1977-06-21 | Luftdurchsatz in ringraum-hohlrippen |
DE19772730007 DE2730007A1 (de) | 1977-05-02 | 1977-07-02 | Thermische abgasfuehrung |
DE19772730480 DE2730480A1 (de) | 1977-05-03 | 1977-07-06 | Thermische abgasfuehrung |
DE19772733443 DE2733443A1 (de) | 1977-05-03 | 1977-07-25 | Thermische abgasfuehrung |
DE19772747655 DE2747655A1 (de) | 1977-07-25 | 1977-10-24 | Thermische abgasfuehrung |
DE19772747959 DE2747959A1 (de) | 1977-07-02 | 1977-10-26 | Thermische abgasfuehrung zusatz 9 |
Publications (2)
Publication Number | Publication Date |
---|---|
IT7822649A0 IT7822649A0 (it) | 1978-04-24 |
IT1095302B true IT1095302B (it) | 1985-08-10 |
Family
ID=27582916
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22649/78A IT1095302B (it) | 1977-04-28 | 1978-04-24 | Impianto di conduzione per apparecchi di gas con scarico nell'atmosfera libera,in particolare per elementi di azionamento a motore |
Country Status (5)
Country | Link |
---|---|
US (1) | US4233812A (it) |
JP (1) | JPS5416041A (it) |
BE (1) | BE866483A (it) |
GB (1) | GB1603962A (it) |
IT (1) | IT1095302B (it) |
Families Citing this family (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5816313U (ja) * | 1981-07-24 | 1983-02-01 | 三恵技研工業株式会社 | 内燃機関の排気装置 |
US4504238A (en) * | 1982-12-23 | 1985-03-12 | Brunswick Corporation | Fluid cooler for marine drives |
JPS60137105U (ja) * | 1984-02-24 | 1985-09-11 | アイシン精機株式会社 | マフラ− |
US5063994A (en) * | 1990-06-26 | 1991-11-12 | Level 1 Technologies, Inc. | Reflux fluid heated patient line |
US5390500A (en) * | 1992-12-29 | 1995-02-21 | Praxair Technology, Inc. | Cryogenic fluid vaporizer system and process |
DE19809859A1 (de) * | 1998-03-07 | 1999-09-09 | Mann & Hummel Filter | Vorrichtung zur Kühlung von Gasen |
US5996734A (en) * | 1998-03-11 | 1999-12-07 | Outboard Marine Corporation | Air intake silencer for a two-stroke engine |
US6438936B1 (en) | 2000-05-16 | 2002-08-27 | Elliott Energy Systems, Inc. | Recuperator for use with turbine/turbo-alternator |
US6622482B2 (en) * | 2001-06-27 | 2003-09-23 | Environmental Control Corporation | Combined catalytic muffler |
JP3652635B2 (ja) * | 2001-10-15 | 2005-05-25 | 核燃料サイクル開発機構 | 中間熱媒体を有する熱交換器 |
WO2003044345A1 (en) * | 2001-11-20 | 2003-05-30 | Norsk Hydro Asa | Exhaust system and a method of producing the same |
US7349123B2 (en) * | 2004-03-24 | 2008-03-25 | Lexmark International, Inc. | Algorithms and methods for determining laser beam process direction position errors from data stored on a printhead |
DE102007013524A1 (de) * | 2007-03-21 | 2008-09-25 | Robert Bosch Gmbh | Dosiermodul mit verbesserten akustischen Eigenschaften |
US20090014235A1 (en) * | 2007-07-13 | 2009-01-15 | Paccar Inc | Flow diffuser for exhaust pipe |
US7971432B2 (en) * | 2007-07-13 | 2011-07-05 | Paccar Inc | Flow diffuser for exhaust pipe |
US8046989B2 (en) * | 2007-11-14 | 2011-11-01 | Paccar Inc | Cooling device for high temperature exhaust |
AT515898B1 (de) | 2014-05-20 | 2017-09-15 | Ge Jenbacher Gmbh & Co Og | Verfahren zur Abgasnachbehandlung |
AT515887A1 (de) | 2014-05-20 | 2015-12-15 | Ge Jenbacher Gmbh & Co Og | Verfahren zum Anfahren eines Thermoreaktors |
AT517670B1 (de) | 2015-09-04 | 2023-03-15 | Innio Jenbacher Gmbh & Co Og | Abgasnachbehandlungsvorrichtung |
CN105569774A (zh) * | 2015-12-19 | 2016-05-11 | 北海创思电子科技产业有限公司 | 用于发动机的消声器 |
DE102016202056B3 (de) * | 2016-02-11 | 2017-03-16 | Cisma Solutions Aps | Abgasauslasssystem für ein Kraftfahrzeug, Kraftfahrzeug mit einem solchen Abgasauslasssystem sowie Verfahren zur Herstellung eines Abgasauslasssystems |
CN107355281B (zh) * | 2017-07-05 | 2019-11-29 | 重庆长野汽车配件有限公司 | 一种耐腐蚀汽车尾气静音装置 |
US10981108B2 (en) | 2017-09-15 | 2021-04-20 | Baker Hughes, A Ge Company, Llc | Moisture separation systems for downhole drilling systems |
CN110006274A (zh) * | 2018-01-04 | 2019-07-12 | 日本碍子株式会社 | 热交换部件及热交换器 |
US11920874B2 (en) * | 2021-02-09 | 2024-03-05 | Ngk Insulators, Ltd. | Heat exchange member, heat exchanger and heat conductive member |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR961667A (it) * | 1950-05-17 | |||
US1447037A (en) * | 1921-06-23 | 1923-02-27 | John H B Rea | Muffler for gas engines |
US1514441A (en) * | 1923-10-25 | 1924-11-04 | Arthur J Culp | Exhaust trap |
US1849086A (en) * | 1929-08-03 | 1932-03-15 | Aerol Engine Corp | Air-cooled cylinder for internal combustion engines |
FR1243325A (fr) * | 1959-12-23 | 1960-10-07 | Appareil <<silencieux>> destiné à équiper les tubulures d'échappement des moteurs à explosion | |
GB920397A (en) * | 1960-06-18 | 1963-03-06 | Daimler Benz Ag | Improvements relating to exhaust silencers for super-charged engines |
US3475922A (en) * | 1967-07-31 | 1969-11-04 | Westinghouse Electric Corp | Liquid cooling chamber |
US3642094A (en) * | 1969-11-26 | 1972-02-15 | Raymond W Yancey | Muffler construction |
US3835645A (en) * | 1973-02-08 | 1974-09-17 | J Zoleta | Method and system for reducing pollutants from engine exhaust |
-
1978
- 1978-04-24 IT IT22649/78A patent/IT1095302B/it active
- 1978-04-24 JP JP4868178A patent/JPS5416041A/ja active Pending
- 1978-04-26 GB GB16521/78A patent/GB1603962A/en not_active Expired
- 1978-04-26 US US05/900,247 patent/US4233812A/en not_active Expired - Lifetime
- 1978-04-27 BE BE187201A patent/BE866483A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US4233812A (en) | 1980-11-18 |
BE866483A (fr) | 1978-08-14 |
IT7822649A0 (it) | 1978-04-24 |
JPS5416041A (en) | 1979-02-06 |
GB1603962A (en) | 1981-12-02 |
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