NL7701901A - Hulpcircuit voor een gasontladingslamp en di/dt schakelstuurcircuit. - Google Patents
Hulpcircuit voor een gasontladingslamp en di/dt schakelstuurcircuit.Info
- Publication number
- NL7701901A NL7701901A NL7701901A NL7701901A NL7701901A NL 7701901 A NL7701901 A NL 7701901A NL 7701901 A NL7701901 A NL 7701901A NL 7701901 A NL7701901 A NL 7701901A NL 7701901 A NL7701901 A NL 7701901A
- Authority
- NL
- Netherlands
- Prior art keywords
- discharge lamp
- gas discharge
- switch control
- circuit
- control circuit
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
- H02M7/53846—Control circuits
- H02M7/53862—Control circuits using transistor type converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5383—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a self-oscillating arrangement
- H02M7/53846—Control circuits
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2881—Load circuits; Control thereof
- H05B41/2882—Load circuits; Control thereof the control resulting from an action on the static converter
- H05B41/2883—Load circuits; Control thereof the control resulting from an action on the static converter the controlled element being a DC/AC converter in the final stage, e.g. by harmonic mode starting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/288—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without preheating electrodes, e.g. for high-intensity discharge lamps, high-pressure mercury or sodium lamps or low-pressure sodium lamps
- H05B41/2885—Static converters especially adapted therefor; Control thereof
- H05B41/2887—Static converters especially adapted therefor; Control thereof characterised by a controllable bridge in the final stage
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/05—Starting and operating circuit for fluorescent lamp
-
- 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
- Y10S315/00—Electric lamp and discharge devices: systems
- Y10S315/07—Starting and control circuits for gas discharge lamp using transistors
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Inverter Devices (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/662,524 US4060752A (en) | 1976-03-01 | 1976-03-01 | Discharge lamp auxiliary circuit with dI/dt switching control |
Publications (1)
Publication Number | Publication Date |
---|---|
NL7701901A true NL7701901A (nl) | 1977-09-05 |
Family
ID=24658071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL7701901A NL7701901A (nl) | 1976-03-01 | 1977-02-22 | Hulpcircuit voor een gasontladingslamp en di/dt schakelstuurcircuit. |
Country Status (11)
Country | Link |
---|---|
US (1) | US4060752A (nl) |
JP (1) | JPS52121977A (nl) |
BE (1) | BE851957A (nl) |
CA (1) | CA1095973A (nl) |
DE (1) | DE2706513A1 (nl) |
FI (1) | FI63510C (nl) |
FR (1) | FR2343392A1 (nl) |
GB (1) | GB1570926A (nl) |
IT (1) | IT1081713B (nl) |
MX (1) | MX143248A (nl) |
NL (1) | NL7701901A (nl) |
Families Citing this family (77)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS52119127A (en) * | 1976-03-30 | 1977-10-06 | Zuiia Asoshieiteizu Inc | Device for operating gas discharge lamp |
US5166578A (en) * | 1980-08-14 | 1992-11-24 | Nilssen Ole K | Inverter power supply circuit |
US4677345A (en) * | 1980-08-14 | 1987-06-30 | Nilssen Ole K | Inverter circuits |
US4277728A (en) * | 1978-05-08 | 1981-07-07 | Stevens Luminoptics | Power supply for a high intensity discharge or fluorescent lamp |
US4181873A (en) * | 1978-08-04 | 1980-01-01 | Esquire, Inc. | High frequency dimmer circuit for high intensity, gaseous discharge lamp |
NL8004175A (nl) * | 1980-07-21 | 1982-02-16 | Philips Nv | Frequentie-omzetter voor het voeden van een elektrodeloze ontladingslamp. |
US5691603A (en) * | 1980-08-14 | 1997-11-25 | Nilssen; Ole K. | Electronic ballast with multiple lamp loads |
US6198228B1 (en) * | 1980-08-14 | 2001-03-06 | Ole K. Nilssen | Plug-in fluorescent lighting system |
US5047690A (en) * | 1980-08-14 | 1991-09-10 | Nilssen Ole K | Inverter power supply and ballast circuit |
US4346332A (en) * | 1980-08-14 | 1982-08-24 | General Electric Company | Frequency shift inverter for variable power control |
US5438239A (en) * | 1980-08-14 | 1995-08-01 | Nilssen; Ole K. | Fluorescent lamp ballast with light output control |
US4723098A (en) * | 1980-10-07 | 1988-02-02 | Thomas Industries, Inc. | Electronic ballast circuit for fluorescent lamps |
US4373146A (en) * | 1980-10-20 | 1983-02-08 | Gte Products Corporation | Method and circuit for operating discharge lamp |
US4388562A (en) * | 1980-11-06 | 1983-06-14 | Astec Components, Ltd. | Electronic ballast circuit |
US4358712A (en) * | 1980-12-29 | 1982-11-09 | Altex Scientific, Inc. | Discharge lamp ballast |
FR2498024B1 (fr) * | 1981-01-13 | 1985-06-14 | Hennequin Cie Sa Ets | Interface convertisseur pour eclairage de securite a partir d'une alimentation continue avec batterie d'accumulateurs |
FR2506554A1 (fr) * | 1981-05-20 | 1982-11-26 | Signaux Entr Electriques | Dispositif d'alimentation electronique pour lampes a decharge |
US4459516A (en) * | 1981-07-06 | 1984-07-10 | Zelina William B | Line operated fluorescent lamp inverter ballast |
US4492899A (en) * | 1981-08-18 | 1985-01-08 | Indicator Controls Corporation | Solid state regulated power supply system for cold cathode luminous tube |
WO1983001885A1 (en) * | 1981-11-17 | 1983-05-26 | Rozsnyai, Aladár | Method, supply apparatus and gas discharge lighting device for the simultaneous supply of a plurality of lighting devices from a common supply source |
US4700113A (en) * | 1981-12-28 | 1987-10-13 | North American Philips Corporation | Variable high frequency ballast circuit |
US5841241A (en) * | 1982-01-25 | 1998-11-24 | Ole K. Nilssen | Electronic ballast for fluorescent lamps |
US4447765A (en) * | 1982-05-18 | 1984-05-08 | General Electric Company | Power supply for low voltage incandescent lamp |
US4719390A (en) * | 1982-05-24 | 1988-01-12 | Helvar Oy | Electronic mains connection device for a gas discharge lamp |
US4511823A (en) * | 1982-06-01 | 1985-04-16 | Eaton William L | Reduction of harmonics in gas discharge lamp ballasts |
US5404083A (en) * | 1982-08-30 | 1995-04-04 | Nilssen; Ole K. | Energy-efficient cost-effective electronic ballast |
US4698554A (en) * | 1983-01-03 | 1987-10-06 | North American Philips Corporation | Variable frequency current control device for discharge lamps |
US4498031A (en) * | 1983-01-03 | 1985-02-05 | North American Philips Corporation | Variable frequency current control device for discharge lamps |
US4506195A (en) * | 1983-02-04 | 1985-03-19 | North American Philips Lighting Corporation | Apparatus for operating HID lamp at high frequency with high power factor and for providing standby lighting |
US4513226A (en) * | 1983-03-04 | 1985-04-23 | Astec Components, Ltd. | Electronic ballast-inverter circuit |
DE3319352A1 (de) * | 1983-05-27 | 1984-11-29 | Siemens AG, 1000 Berlin und 8000 München | Wechselrichter zur speisung von entladungslampen |
US4511195A (en) * | 1983-06-30 | 1985-04-16 | Beckman Instruments, Inc. | Device for starting and operating gas discharge tubes |
DE3327030A1 (de) * | 1983-07-27 | 1985-02-07 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Schaltungsanordnung zum betrieb von hochdruckgasentladungslampen |
US4587463A (en) * | 1983-09-22 | 1986-05-06 | Isco, Inc. | Absorbance monitor |
US4709190A (en) * | 1983-09-22 | 1987-11-24 | Isco, Inc. | Method for operating an absorbance monitor |
US4631449A (en) * | 1984-08-06 | 1986-12-23 | General Electric Company | Integral crystal-controlled line-voltage ballast for compact RF fluorescent lamps |
US4672159A (en) * | 1984-11-21 | 1987-06-09 | Nilssen Ole K | Electrically controllable magnetron power supply |
US4682084A (en) * | 1985-08-28 | 1987-07-21 | Innovative Controls, Incorporated | High intensity discharge lamp self-adjusting ballast system sensitive to the radiant energy or heat of the lamp |
US4686428A (en) * | 1985-08-28 | 1987-08-11 | Innovative Controls, Incorporated | High intensity discharge lamp self-adjusting ballast system with current limiters and a current feedback loop |
US4734650A (en) * | 1985-09-26 | 1988-03-29 | General Electric Company | Adjusting feedback gain in a fluorescent lamp dimming control |
SE447623B (sv) * | 1985-11-05 | 1986-11-24 | Lumalampan Ab | Fattning for kompaktlysror |
US5446342A (en) * | 1985-11-06 | 1995-08-29 | Nilssen; Ole K. | Light-output-controlled fluorescent lighting fixture |
US4717863A (en) * | 1986-02-18 | 1988-01-05 | Zeiler Kenneth T | Frequency modulation ballast circuit |
US4873471A (en) * | 1986-03-28 | 1989-10-10 | Thomas Industries Inc. | High frequency ballast for gaseous discharge lamps |
US4999547A (en) * | 1986-09-25 | 1991-03-12 | Innovative Controls, Incorporated | Ballast for high pressure sodium lamps having constant line and lamp wattage |
DE3641070A1 (de) * | 1986-12-02 | 1988-06-16 | Philips Patentverwaltung | Schaltungsanordnung zum betrieb von hochdruck-gasentladungslampen mittels eines impulsfoermigen versorgungsstromes |
JPS63143796A (ja) * | 1986-12-05 | 1988-06-16 | 株式会社日立製作所 | 放電灯点灯装置 |
US4866430A (en) * | 1986-12-11 | 1989-09-12 | Motorola, Inc. | Low voltage LED driver circuit |
US4777410A (en) * | 1987-06-22 | 1988-10-11 | Innovative Controls, Inc. | Ballast striker circuit |
US4954754A (en) * | 1988-05-02 | 1990-09-04 | Nilssen Ole K | Controlled electronic ballast |
US5003231A (en) * | 1989-04-12 | 1991-03-26 | Peroxidation Systems, Inc. | Adaptive resonant ballast for discharge lamps |
DE3925993A1 (de) * | 1989-08-05 | 1991-02-07 | Bosch Gmbh Robert | Verfahren zum zuenden einer gasentladungslampe |
US4972124A (en) * | 1990-04-12 | 1990-11-20 | Powers Charles D | Electronic ballast inverter |
US5270620A (en) * | 1990-09-04 | 1993-12-14 | General Electric Company | High frequency resonant converter for operating metal halide lamps |
EP0477621B1 (en) * | 1990-09-07 | 1995-11-29 | Matsushita Electric Industrial Co., Ltd. | A lighting device of discharge lamp |
IT1250807B (it) * | 1991-07-12 | 1995-04-21 | Marelli Autronica | Circuito auto-oscillante per il comando di una lampada a scarica di gas, particolarmente per l'impiego a bordo di un autoveicolo. |
US5309062A (en) * | 1992-05-20 | 1994-05-03 | Progressive Technology In Lighting, Inc. | Three-way compact fluorescent lamp system utilizing an electronic ballast having a variable frequency oscillator |
JP3026681B2 (ja) * | 1992-06-30 | 2000-03-27 | 三洋電機株式会社 | 蛍光灯制御装置 |
JPH06176881A (ja) * | 1992-08-20 | 1994-06-24 | Philips Electron Nv | 安定器回路 |
US5500575A (en) * | 1993-10-27 | 1996-03-19 | Lighting Control, Inc. | Switchmode AC power controller |
US5545955A (en) * | 1994-03-04 | 1996-08-13 | International Rectifier Corporation | MOS gate driver for ballast circuits |
US5550436A (en) * | 1994-09-01 | 1996-08-27 | International Rectifier Corporation | MOS gate driver integrated circuit for ballast circuits |
US6034488A (en) * | 1996-06-04 | 2000-03-07 | Lighting Control, Inc. | Electronic ballast for fluorescent lighting system including a voltage monitoring circuit |
US6495971B1 (en) | 1998-06-13 | 2002-12-17 | Hatch Transformers, Inc. | High intensity discharge lamp ballast |
EP0984670B1 (en) | 1998-06-13 | 2009-12-09 | Greenwood Soar IP Limited | High intensity discharge lamp ballast |
GB9825296D0 (en) * | 1998-11-18 | 1999-01-13 | Microlights Ltd | A improvement to electrical lamps |
GB9825298D0 (en) * | 1998-11-18 | 1999-01-13 | Microlights Ltd | An electronic ballast |
DE19940137A1 (de) * | 1999-08-24 | 2001-03-01 | Philips Corp Intellectual Pty | Serienresonanter Konverter mit einer Regelschaltung |
US6274988B1 (en) * | 2000-01-27 | 2001-08-14 | R-Can Environmental Inc. | Open loop current control ballast low pressure mercury germicidal UV lamps |
US7715167B2 (en) * | 2005-02-23 | 2010-05-11 | Alan Edel | Apparatus and method for controlling excitation frequency of magnetostrictive transducer |
US7589480B2 (en) * | 2006-05-26 | 2009-09-15 | Greenwood Soar Ip Ltd. | High intensity discharge lamp ballast |
EP1914419B1 (en) * | 2006-10-19 | 2015-09-16 | Siemens Aktiengesellschaft | Wind energy installation and method of controlling the output power from a wind energy installation |
DK1914420T3 (en) * | 2006-10-19 | 2015-08-24 | Siemens Ag | Wind energy installation and method for controlling the output power from a wind power installation |
US8143795B2 (en) * | 2006-11-09 | 2012-03-27 | Osram Ag | Circuit arrangement for firing a discharge lamp |
US9927466B2 (en) | 2012-07-06 | 2018-03-27 | General Electric Company | System and method for controlling dynamic output impedance of an inverter |
JP2015006061A (ja) * | 2013-06-20 | 2015-01-08 | 株式会社豊田自動織機 | 車載用電動圧縮機 |
GB2517171A (en) * | 2013-08-13 | 2015-02-18 | Harvard Engineering Plc | Power Supply |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3628086A (en) * | 1969-09-11 | 1971-12-14 | Gen Electric | High-frequency lamp-operating circuit |
US3648106A (en) * | 1970-02-24 | 1972-03-07 | Westinghouse Electric Corp | Dynamic reactorless high-frequency vapor lamp ballast |
GB1326392A (en) * | 1970-11-14 | 1973-08-08 | Dobson Park Ind | Fluorescent lamp and other circuits |
US3754160A (en) * | 1971-10-28 | 1973-08-21 | Radiant Ind Inc | Four-lamp driver circuit for fluorescent lamps |
DE2355600A1 (de) * | 1972-11-13 | 1974-05-16 | Gen Electric | Geregelte leistungseinspeisung mit einem halbwellenschalter |
US3919592A (en) * | 1973-11-19 | 1975-11-11 | Lutron Electronics Co | High intensity discharge mercury vapor lamp dimming system |
-
1976
- 1976-03-01 US US05/662,524 patent/US4060752A/en not_active Expired - Lifetime
-
1977
- 1977-02-16 DE DE19772706513 patent/DE2706513A1/de not_active Withdrawn
- 1977-02-16 GB GB6485/77A patent/GB1570926A/en not_active Expired
- 1977-02-18 CA CA272,286A patent/CA1095973A/en not_active Expired
- 1977-02-21 JP JP1724477A patent/JPS52121977A/ja active Pending
- 1977-02-22 NL NL7701901A patent/NL7701901A/nl not_active Application Discontinuation
- 1977-02-22 IT IT20530/77A patent/IT1081713B/it active
- 1977-02-22 FI FI770559A patent/FI63510C/fi not_active IP Right Cessation
- 1977-02-25 FR FR7705536A patent/FR2343392A1/fr active Granted
- 1977-03-01 MX MX168209A patent/MX143248A/es unknown
- 1977-03-01 BE BE175368A patent/BE851957A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
FI770559A (nl) | 1977-09-02 |
GB1570926A (en) | 1980-07-09 |
US4060752A (en) | 1977-11-29 |
FI63510C (fi) | 1983-06-10 |
FI63510B (fi) | 1983-02-28 |
FR2343392B1 (nl) | 1983-04-01 |
BE851957A (fr) | 1977-09-01 |
JPS52121977A (en) | 1977-10-13 |
DE2706513A1 (de) | 1977-09-08 |
CA1095973A (en) | 1981-02-17 |
FR2343392A1 (fr) | 1977-09-30 |
MX143248A (es) | 1981-04-06 |
IT1081713B (it) | 1985-05-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
BA | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
BV | The patent application has lapsed |