GB1427431A - Anesthesia rebreathing apparatus reservoirs for anesthesia rebreathing apparatus - Google Patents

Anesthesia rebreathing apparatus reservoirs for anesthesia rebreathing apparatus

Info

Publication number
GB1427431A
GB1427431A GB229773A GB229773A GB1427431A GB 1427431 A GB1427431 A GB 1427431A GB 229773 A GB229773 A GB 229773A GB 229773 A GB229773 A GB 229773A GB 1427431 A GB1427431 A GB 1427431A
Authority
GB
United Kingdom
Prior art keywords
valve
sleeve
elastic
breathing tube
pressure relief
Prior art date
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
GB229773A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB1427431A publication Critical patent/GB1427431A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/10—Preparation of respiratory gases or vapours
    • A61M16/104—Preparation of respiratory gases or vapours specially adapted for anaesthetics
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/08—Bellows; Connecting tubes ; Water traps; Patient circuits
    • A61M16/0816—Joints or connectors
    • A61M16/0833—T- or Y-type connectors, e.g. Y-piece
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
    • A61M16/0057—Pumps therefor
    • A61M16/0078—Breathing bags
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • 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
    • Y10S128/00—Surgery
    • Y10S128/909—Breathing apparatus with means for preventing patient cross-contamination

Landscapes

  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Emergency Medicine (AREA)
  • Pulmonology (AREA)
  • Veterinary Medicine (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Fluid-Driven Valves (AREA)

Abstract

1427431 Valves M L HENKIN 16 Jan 1973 [17 Jan 1972] 2297/73 Heading F2V [Also in Division A5] Anaesthetic apparatus (see Division A5) includes a pressure relief valve which vibrates to emit an audible alarm when open and a oneway valve which opens in response to exhalation of the patient, the pressure relief valve may comprise an elastic disc valve 240, Fig. 16, which vibrates when open and which closes against a cup-shaped recess 244 in a wall 216 and has an elastic shaft 248 supporting a retaining flange 250 and a pull tab 253 by which it is assembled and held in an aperture in the recessed part of the wall 216. Alternatively, the pressure relief valve may comprise an elastic sleeve 400, Fig. 26, secured at its ends about a portion of a breathing tube 402 of the anaesthetic apparatus, an intermediate portion of the sleeve being held against the breathing tube by an elastic band 410. The breathing tube 402 has an aperture 408 beneath a portion of the sleeve 400 on one side of the elastic band 410, the elastic sleeve having a slit 412 in its other portion which opens to relieve pressure in the breathing tube and produce audible vibrations when the pressure is sufficiently great to overcome the constricting effect of the elastic band on the sleeve. The one-way exhalation valve comprises a valve element 218, Fig. 14, having two pins 220, 224 received in wells in the valve having, the valve element being slightly stressed and thus bowed about an axis through the pins 220, 224 and conforming to its curved valve seat 226.
GB229773A 1972-01-17 1973-01-16 Anesthesia rebreathing apparatus reservoirs for anesthesia rebreathing apparatus Expired GB1427431A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00218337A US3814091A (en) 1972-01-17 1972-01-17 Anesthesia rebreathing apparatus

Publications (1)

Publication Number Publication Date
GB1427431A true GB1427431A (en) 1976-03-10

Family

ID=22814702

Family Applications (4)

Application Number Title Priority Date Filing Date
GB3641775A Expired GB1427433A (en) 1972-01-17 1973-01-16 Valves for anesthesia rebreathing apparatus
GB3643075A Expired GB1427434A (en) 1972-01-17 1973-01-16 Co2 absorber canisters for anesthesia rebreathing systems
GB229773A Expired GB1427431A (en) 1972-01-17 1973-01-16 Anesthesia rebreathing apparatus reservoirs for anesthesia rebreathing apparatus
GB3641675A Expired GB1427432A (en) 1972-01-17 1973-01-16 Reservoirs for anesthesia rebreathing apparatus

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB3641775A Expired GB1427433A (en) 1972-01-17 1973-01-16 Valves for anesthesia rebreathing apparatus
GB3643075A Expired GB1427434A (en) 1972-01-17 1973-01-16 Co2 absorber canisters for anesthesia rebreathing systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB3641675A Expired GB1427432A (en) 1972-01-17 1973-01-16 Reservoirs for anesthesia rebreathing apparatus

Country Status (13)

Country Link
US (1) US3814091A (en)
JP (5) JPS5441839B2 (en)
AU (1) AU490936B2 (en)
BR (1) BR7300367D0 (en)
CA (1) CA969056A (en)
CH (4) CH583039A5 (en)
DE (5) DE2365724B2 (en)
FR (5) FR2168404B1 (en)
GB (4) GB1427433A (en)
IT (1) IT978233B (en)
NL (1) NL164476C (en)
SE (4) SE410272B (en)
SU (1) SU733505A3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169384A (en) * 1984-12-28 1986-07-09 Spray Plast Spa Sprayer
GB2190465A (en) * 1986-05-15 1987-11-18 C R M Design Services Ltd A valve assembly
GB2286970A (en) * 1993-05-03 1995-09-06 Yu Wen Cheng Mouth-to-mouth resuscitation device
CN111163825A (en) * 2017-09-28 2020-05-15 皇家飞利浦有限公司 Inflatable catheter and headgear including same

Families Citing this family (82)

* Cited by examiner, † Cited by third party
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US3867936A (en) * 1973-01-16 1975-02-25 Shirley Aldred & Co Ltd Anaesthetic gas safety equipment
US4007737A (en) * 1974-01-28 1977-02-15 Paluch Bernard R Anesthesia breathing system
US3865106A (en) * 1974-03-18 1975-02-11 Bernard P Palush Positive pressure breathing circuit
US3945378A (en) * 1974-03-18 1976-03-23 Paluch Bernard R Positive pressure breathing circuit
US3973564A (en) * 1974-08-08 1976-08-10 Dupaco Incorporated Anaesthetist's respiration apparatus
FR2297639A1 (en) * 1975-01-20 1976-08-13 Minerve Sa VOLUMETRIC RESPIRATOR, IN PARTICULAR FOR ASSISTED ANESTHESIA AND LONG-TERM RESUSCITATION
US3976065A (en) * 1975-03-10 1976-08-24 Gerald Durkan Digital fluidic ventilator
US4015598A (en) * 1975-09-05 1977-04-05 Brown Glenn E Anaesthesic system
US4106502A (en) * 1976-11-18 1978-08-15 Margaret M. Laurence Resuscitator
US4333450A (en) * 1976-12-14 1982-06-08 Lester Victor E Nebulizer-manifold
DE2725515C2 (en) * 1977-06-06 1986-02-20 Lang, Volker O., Prof. Dr.Med., 8012 Ottobrunn Bacteriologically closed ventilation system
JPS5568371A (en) * 1978-11-17 1980-05-23 Fukunaga Hitoko Breathing circuit
JPS5577398A (en) * 1978-12-06 1980-06-11 Kobe Steel Ltd Controller for output of electricity generator
JPS55106166A (en) * 1979-02-08 1980-08-14 Takashi Matsushita Carbon dioxide regulator for breathing circuit
GB2048080A (en) * 1979-05-08 1980-12-10 Draegerwerk Ag Respirators
US4324234A (en) * 1980-05-21 1982-04-13 Maness Samuel G Dual chamber personal flotation device
SE430304B (en) * 1980-09-01 1983-11-07 Testa Lab A S ANESTHESIA RESPIRATORY EQUIPMENT
US4481938A (en) * 1981-10-16 1984-11-13 Lindley John E Resuscitator, respirator and/or incubator
US4502481A (en) * 1983-02-15 1985-03-05 Christian Pamela H Device for manually ventilating a patient
US4781184A (en) * 1984-01-13 1988-11-01 Fife William P Closed circuit breathing apparatus and method of using same
SE8500817D0 (en) * 1985-02-20 1985-02-20 Lars Jonsson HALF-EMPTY ANESTHESIA SYSTEM
US5377670A (en) * 1986-09-23 1995-01-03 Smith; Charles A. Insulated breathing tube
DE8805260U1 (en) * 1988-04-21 1989-01-19 Jantzen, Jan-Peter A.H., Prof. Dr.med., 6507 Ingelheim Switchable carbon filter for anesthesia circuit system
US4917108A (en) * 1988-06-29 1990-04-17 Mault James R Oxygen consumption meter
US4991576A (en) * 1988-10-11 1991-02-12 Henkin Melvyn Lane Anesthesia rebreathing system
US5143060A (en) * 1989-06-08 1992-09-01 Smith Charles A Insulated carbon dioxide absorption system
JPH03188874A (en) * 1989-12-20 1991-08-16 Teijin Ltd Oxygen enriching unit
ZA927931B (en) * 1992-08-24 1994-04-14 Donald Munro Miller Breathing apparatus
MX9305114A (en) * 1992-08-24 1994-07-29 Life Air Pty Ltd BREATHING APPARATUS.
US5398675A (en) * 1992-10-14 1995-03-21 Henkin; Melvyn L. Anesthesia rebreathing system
US5577693A (en) * 1995-01-11 1996-11-26 Children's Medical Center Corporation Anesthesia circuit stand
US20010044588A1 (en) * 1996-02-22 2001-11-22 Mault James R. Monitoring system
US6135107A (en) * 1996-03-11 2000-10-24 Mault; James R. Metabolic gas exchange and noninvasive cardiac output monitor
US5836300A (en) * 1996-03-11 1998-11-17 Mault; James R. Metabolic gas exchange and noninvasive cardiac output monitor
SE509580C2 (en) * 1996-11-18 1999-02-08 Gibeck Ab Louis Regenerable absorbent apparatus, as well as a method for removing carbon dioxide from exhaled gases under anesthesia and a recirculating recirculation system for anesthesia.
FR2758089B1 (en) * 1997-01-06 1999-03-05 Georges Boussignac METHOD AND DEVICE FOR EXCHANGING RESPIRATORY TUBE IN THE TRACHEA OF A PATIENT
US6309360B1 (en) 1997-03-17 2001-10-30 James R. Mault Respiratory calorimeter
CA2320238C (en) 1998-02-05 2011-08-23 James R. Mault Metabolic calorimeter employing respiratory gas analysis
EP1102564A1 (en) 1998-08-03 2001-05-30 MAULT, James R. Method and apparatus for respiratory gas analysis employing measurement of expired gas mass
US6406435B1 (en) 1998-11-17 2002-06-18 James R. Mault Method and apparatus for the non-invasive determination of cardiac output
JP3223892B2 (en) 1998-11-25 2001-10-29 日本電気株式会社 Ink jet recording apparatus and ink jet recording method
JP2003527881A (en) 1999-05-10 2003-09-24 ジェームズ アール モールト Airway-based cardiac output monitor and method of using the same
US6468222B1 (en) 1999-08-02 2002-10-22 Healthetech, Inc. Metabolic calorimeter employing respiratory gas analysis
US6899684B2 (en) * 1999-08-02 2005-05-31 Healthetech, Inc. Method of respiratory gas analysis using a metabolic calorimeter
EP1217942A1 (en) 1999-09-24 2002-07-03 Healthetech, Inc. Physiological monitor and associated computation, display and communication unit
WO2001028495A2 (en) 1999-10-08 2001-04-26 Healthetech, Inc. Indirect calorimeter for weight control
US6612306B1 (en) 1999-10-13 2003-09-02 Healthetech, Inc. Respiratory nitric oxide meter
US6629934B2 (en) 2000-02-02 2003-10-07 Healthetech, Inc. Indirect calorimeter for medical applications
US6386196B1 (en) * 2000-03-13 2002-05-14 Steven E. Culton Warning device for oxygen delivery system failure
US6482158B2 (en) 2000-05-19 2002-11-19 Healthetech, Inc. System and method of ultrasonic mammography
EP1283689A4 (en) * 2000-05-25 2005-03-09 Healthetech Inc Weight control method using physical activity based parameters
CA2409501A1 (en) * 2000-05-25 2001-11-29 Healthetech, Inc. Physiological monitoring using wrist-mounted device
WO2001093743A2 (en) * 2000-06-07 2001-12-13 Healthetech, Inc. Breath ketone analyzer
CA2413657A1 (en) * 2000-06-16 2001-12-20 Healthetech, Inc. Speech recognition capability for a personal digital assistant
AU2001288902A1 (en) * 2000-09-07 2002-03-22 Healthetech, Inc. Portable computing apparatus particularly useful in a weight management program
US6620106B2 (en) 2000-09-29 2003-09-16 Healthetech, Inc. Indirect calorimetry system
US20020133378A1 (en) * 2000-10-13 2002-09-19 Mault James R. System and method of integrated calorie management
US6607387B2 (en) 2000-10-30 2003-08-19 Healthetech, Inc. Sensor system for diagnosing dental conditions
ES2187333B1 (en) * 2001-01-10 2005-06-16 Pedro Acha Gandarias SYRINGE AND METHOD OF USE.
US20020138213A1 (en) * 2001-03-02 2002-09-26 Mault James R. System and method of metabolic rate measurement
US20030023181A1 (en) * 2001-07-26 2003-01-30 Mault James R. Gas analyzer of the fluorescent-film type particularly useful for respiratory analysis
US20030130567A1 (en) * 2002-01-09 2003-07-10 Mault James R. Health-related devices and methods
US20030130595A1 (en) * 2001-08-13 2003-07-10 Mault James R. Health improvement systems and methods
US20030105407A1 (en) * 2001-11-30 2003-06-05 Pearce, Edwin M. Disposable flow tube for respiratory gas analysis
US20030152607A1 (en) * 2002-02-13 2003-08-14 Mault James R. Caloric management system and method with voice recognition
WO2003084395A1 (en) * 2002-04-01 2003-10-16 Healthetech, Inc. System and method of determining an individualized drug administration dosage
USD478660S1 (en) 2002-07-01 2003-08-19 Healthetech, Inc. Disposable mask with sanitation insert for a respiratory analyzer
US20080095643A1 (en) * 2006-10-11 2008-04-24 Weatherford/Lamb, Inc. Active intake pressure control of downhole pump assemblies
US7793683B2 (en) * 2006-10-11 2010-09-14 Weatherford/Lamb, Inc. Active intake pressure control of downhole pump assemblies
US20100192947A1 (en) * 2009-02-04 2010-08-05 Jeff Mandel Anesthetic delivery system and methods of use
WO2011014908A1 (en) * 2009-08-03 2011-02-10 Colin Dunlop An improved method and apparatus for delivering a fluid to a patient
CN102008775B (en) * 2009-09-08 2014-02-26 北京谊安医疗系统股份有限公司 Integrated gas transmission pipe as well as breathing machine and anaesthesia machine
JP5344729B2 (en) * 2010-07-05 2013-11-20 ナブテスコ株式会社 Brake cylinder device and disc brake device
EP2589403B1 (en) * 2011-05-31 2016-02-03 Ishikita, Naoyuki Anesthetic inhalation-assisting device
WO2013077273A1 (en) * 2011-11-25 2013-05-30 ナブテスコ株式会社 Brake cylinder device and disk brake device
DE102014006273A1 (en) 2014-05-02 2015-11-05 Schwing Gmbh support
JP6314038B2 (en) * 2014-06-03 2018-04-18 泉工医科工業株式会社 Canister internal structure, canister and canister connection
NZ714595A (en) * 2014-06-19 2017-06-30 Resmed Ltd Patient interface for respiratory therapy
US10039892B2 (en) 2015-03-25 2018-08-07 Diane Miller Pediatric induction of anesthesia
DE102017011909A1 (en) * 2017-12-21 2019-06-27 Dräger Safety AG & Co. KGaA Mask adapter for connecting two breathing tubes of a circuit breathing apparatus to a breathing mask
CN109498953A (en) * 2018-12-14 2019-03-22 单晓辉 A kind of multi-functional clinical anesthesia section Supplementary Anesthesia device
JP7061302B1 (en) * 2022-02-02 2022-04-28 株式会社三幸製作所 Plate used for canisters for inhalation anesthesia

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2169384A (en) * 1984-12-28 1986-07-09 Spray Plast Spa Sprayer
GB2190465A (en) * 1986-05-15 1987-11-18 C R M Design Services Ltd A valve assembly
GB2286970A (en) * 1993-05-03 1995-09-06 Yu Wen Cheng Mouth-to-mouth resuscitation device
CN111163825A (en) * 2017-09-28 2020-05-15 皇家飞利浦有限公司 Inflatable catheter and headgear including same

Also Published As

Publication number Publication date
NL164476B (en) 1980-08-15
NL164476C (en) 1981-01-15
SU733505A3 (en) 1980-05-05
JPS5441839B2 (en) 1979-12-11
BR7300367D0 (en) 1973-10-25
FR2168404B1 (en) 1979-04-27
JPS5316490A (en) 1978-02-15
DE2365725A1 (en) 1976-05-20
CH583040A5 (en) 1976-12-31
DE2365879B2 (en) 1979-05-10
DE2365879C3 (en) 1980-01-31
JPS5442757B2 (en) 1979-12-15
JPS5316488A (en) 1978-02-15
DE2365724C3 (en) 1979-05-03
GB1427432A (en) 1976-03-10
DE2365855B2 (en) 1977-12-29
FR2168404A1 (en) 1973-08-31
DE2365725B2 (en) 1979-06-07
FR2309243B1 (en) 1979-06-15
DE2302110B2 (en) 1979-04-26
JPS5316489A (en) 1978-02-15
JPS4879487A (en) 1973-10-24
SE7607066L (en) 1976-06-21
SE410272B (en) 1979-10-08
FR2278353B1 (en) 1979-06-15
DE2302110A1 (en) 1973-07-26
FR2338053A1 (en) 1977-08-12
NL7300684A (en) 1973-07-19
FR2338054B1 (en) 1981-01-09
US3814091A (en) 1974-06-04
DE2365725C3 (en) 1980-02-14
GB1427434A (en) 1976-03-10
JPS5316491A (en) 1978-02-15
JPS5517589B2 (en) 1980-05-13
SE419289B (en) 1981-07-27
DE2365879A1 (en) 1976-08-26
JPS5442756B2 (en) 1979-12-15
IT978233B (en) 1974-09-20
CH583041A5 (en) 1976-12-31
GB1427433A (en) 1976-03-10
SE7607064L (en) 1976-06-21
FR2309243A1 (en) 1976-11-26
AU5118673A (en) 1974-07-18
AU490936B2 (en) 1976-06-24
JPS5442758B2 (en) 1979-12-15
AU1258476A (en) 1976-06-24
SE7607065L (en) 1976-06-21
DE2365724B2 (en) 1978-08-31
DE2302110C3 (en) 1979-12-06
DE2365855A1 (en) 1976-08-05
DE2365855C3 (en) 1978-08-24
CH583042A5 (en) 1976-12-31
CH583039A5 (en) 1976-12-31
FR2338053B1 (en) 1980-02-08
FR2338054A2 (en) 1977-08-12
SE419942B (en) 1981-09-07
CA969056A (en) 1975-06-10
DE2365724A1 (en) 1976-02-26
FR2278353A1 (en) 1976-02-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee