GB1148241A - Improvements in or relating to pipetting devices - Google Patents

Improvements in or relating to pipetting devices

Info

Publication number
GB1148241A
GB1148241A GB15207/66A GB1520766A GB1148241A GB 1148241 A GB1148241 A GB 1148241A GB 15207/66 A GB15207/66 A GB 15207/66A GB 1520766 A GB1520766 A GB 1520766A GB 1148241 A GB1148241 A GB 1148241A
Authority
GB
United Kingdom
Prior art keywords
plunger
barrel
timer
contact
liquid
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
GB15207/66A
Inventor
Helmut George Tietje
Robert Schwarz
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.)
Becton Dickinson and Co
Original Assignee
Becton Dickinson and Co
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 Becton Dickinson and Co filed Critical Becton Dickinson and Co
Priority to GB26865/67A priority Critical patent/GB1148242A/en
Publication of GB1148241A publication Critical patent/GB1148241A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00Supporting devices; Holding devices
    • B01L9/54Supports specially adapted for pipettes and burettes
    • B01L9/543Supports specially adapted for pipettes and burettes for disposable pipette tips, e.g. racks or cassettes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150015Source of blood
    • A61B5/150022Source of blood for capillary blood or interstitial fluid
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150053Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
    • A61B5/150061Means for enhancing collection
    • A61B5/150099Means for enhancing collection by negative pressure, other than vacuum extraction into a syringe by pulling on the piston rod or into pre-evacuated tubes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150206Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150213Venting means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150206Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150236Pistons, i.e. cylindrical bodies that sit inside the syringe barrel, typically with an air tight seal, and slide in the barrel to create a vacuum or to expel blood
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150206Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150244Rods for actuating or driving the piston, i.e. the cylindrical body that sits inside the syringe barrel, typically with an air tight seal, and slides in the barrel to create a vacuum or to expel blood
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150206Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150259Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/15Devices for taking samples of blood
    • A61B5/150007Details
    • A61B5/150343Collection vessels for collecting blood samples from the skin surface, e.g. test tubes, cuvettes
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M1/00Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/344Constructions for connecting the needle, e.g. to syringe nozzle or needle hub using additional parts, e.g. clamping rings or collets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/021Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/021Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0213Accessories for glass pipettes; Gun-type pipettes, e.g. safety devices, pumps
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/021Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0217Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/021Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0217Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
    • B01L3/0224Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type having mechanical means to set stroke length, e.g. movable stops
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/021Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids
    • B01L3/0217Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type
    • B01L3/0231Pipettes, i.e. with only one conduit for withdrawing and redistributing liquids of the plunger pump type having several coaxial pistons
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/0241Drop counters; Drop formers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/0275Interchangeable or disposable dispensing tips
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/0275Interchangeable or disposable dispensing tips
    • B01L3/0279Interchangeable or disposable dispensing tips co-operating with positive ejection means
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L3/00Containers or dishes for laboratory use, e.g. laboratory glassware; Droppers
    • B01L3/02Burettes; Pipettes
    • B01L3/0282Burettes; Pipettes mounted within a receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00Supporting devices; Holding devices
    • B01L9/06Test-tube stands; Test-tube holders
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00Sulfur; Compounds thereof
    • C01B17/69Sulfur trioxide; Sulfuric acid
    • C01B17/90Separation; Purification
    • C01B17/907Removal of arsenic
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/315Pistons; Piston-rods; Guiding, blocking or restricting the movement of the rod or piston; Appliances on the rod for facilitating dosing ; Dosing mechanisms
    • A61M5/31525Dosing
    • A61M5/31531Microsyringes, e.g. having piston bore diameter close or equal to needle shaft diameter
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/346Constructions for connecting the needle, e.g. to syringe nozzle or needle hub friction fit
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61MDEVICES 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
    • A61M5/00Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/178Syringes
    • A61M5/31Details
    • A61M5/32Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
    • A61M5/34Constructions for connecting the needle, e.g. to syringe nozzle or needle hub
    • A61M5/347Constructions for connecting the needle, e.g. to syringe nozzle or needle hub rotatable, e.g. bayonet or screw
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/04Exchange or ejection of cartridges, containers or reservoirs
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01LCHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2300/00Additional constructional details
    • B01L2300/08Geometry, shape and general structure
    • B01L2300/0832Geometry, shape and general structure cylindrical, tube shaped
    • B01L2300/0838Capillaries

Abstract

1,148,241. Projecting device with timer. BECTON, DICKINSON & CO. 5 April, 1966, No. 15207/66. Heading B1X. [Also in Division F1] A pipetting device which may operate to start a timing device for automatically determining reaction time in for example prothrombin tests comprises plunger 22 reciprocable in tubular barrel 24, disposable pipette tip 134 coupled barrel 24 by coupling 132, flanges 42, 44 within the barrel preventing forward movement of the plunger when not appropriately oriented in the barrel, and means for' sewing the plunger with relation to the barrel in a position in which' forward movement of the plunger causes a measured quantity of liquid to be dispensed. The means for setting the plunger may comprise stop flanges (50), 52 within the barrel which cooperate with a plate (114) extending from flange 113 on the rear end of the plunger (Fig. 7 not shown) to limit the extent of forward .movement of the plunger and hence to provide the desired dosage. When liquid is being drawn into tip 134, switch button 88 is in the off position as shown, electrical contacts 68; 70 do not touch and there is no operative connection with timer (80). When liquid is to be dispensed, switch 88 is moved to the on position, contact 70 moves to touch contact 68 (Fig. 3 not shown), forward movement of the plunger moves contact 68 towards contact 66, and the circuit with timer. (80) is completed to start the timer on completion of the forward stroke of the plunger.
GB15207/66A 1963-08-22 1966-04-05 Improvements in or relating to pipetting devices Expired GB1148241A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB26865/67A GB1148242A (en) 1963-08-22 1966-04-05 Improvements in or relating to disposable pipette tips for attachment to pipettes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US303798A US3244009A (en) 1963-08-22 1963-08-22 Automatic pipette

Publications (1)

Publication Number Publication Date
GB1148241A true GB1148241A (en) 1969-04-10

Family

ID=52597663

Family Applications (2)

Application Number Title Priority Date Filing Date
GB15207/66A Expired GB1148241A (en) 1963-08-22 1966-04-05 Improvements in or relating to pipetting devices
GB26865/67A Expired GB1148242A (en) 1963-08-22 1966-04-05 Improvements in or relating to disposable pipette tips for attachment to pipettes

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB26865/67A Expired GB1148242A (en) 1963-08-22 1966-04-05 Improvements in or relating to disposable pipette tips for attachment to pipettes

Country Status (4)

Country Link
US (1) US3244009A (en)
CH (1) CH440768A (en)
FR (1) FR1492062A (en)
GB (2) GB1148241A (en)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494201A (en) * 1968-08-16 1970-02-10 Oxford Lab Pipetting system
US3498135A (en) * 1968-11-13 1970-03-03 Baxter Laboratories Inc Pipette
US3591056A (en) * 1969-06-12 1971-07-06 Whale Inc Pipetting syringe of precisely variable displacement volume
US3656351A (en) * 1970-06-25 1972-04-18 Bio Data Corp Pipette
US3766785A (en) * 1971-05-17 1973-10-23 Analytical Prod Automatic pipette
US3830108A (en) * 1972-08-02 1974-08-20 F Spong Pipetting device
US3855867A (en) * 1972-08-21 1974-12-24 Oxford Lab Liquid transfer pipetting device
DE2926691C2 (en) * 1979-07-02 1983-05-26 Eppendorf Gerätebau Netheler + Hinz GmbH, 2000 Hamburg Repeater pipette
US3962715A (en) * 1974-12-03 1976-06-08 Yeshiva University High-speed, high-current spike suppressor and method for fabricating same
USD246380S (en) * 1975-03-27 1977-11-15 Boothby Alfons Th Device for pipetting of liquids
US3982899A (en) * 1975-05-22 1976-09-28 Corning Glass Works Fluid handling apparatus
USD242729S (en) * 1975-05-30 1976-12-14 Drummond Scientific Company Automatic pipette or the like
US4050316A (en) * 1975-11-03 1977-09-27 Becton, Dickinson And Company Pipette aspirator device
USRE30483E (en) * 1978-04-19 1981-01-20 Baxter Travenol Laboratories, Inc. Pipette
US4489618A (en) * 1980-07-03 1984-12-25 Meyer Richard C Pipet signalling system
US4442722A (en) * 1982-02-23 1984-04-17 Beckman Instruments Inc. Plunger operated pipet
US5090255A (en) * 1990-03-27 1992-02-25 Drummond Scientific Company Programmable pipet apparatus
FI86812C (en) * 1991-01-07 1992-10-26 Labsystems Oy Förträngningspipett
US5616871A (en) * 1995-09-28 1997-04-01 Drummond Scientific Company Pipet gun assembly
AU2001275195A1 (en) * 2000-06-26 2002-01-08 Vistalab Technologies, Inc. Automatic pipette identification and detipping
WO2002000346A2 (en) * 2000-06-26 2002-01-03 Vistalab Technologies, Inc. Handheld pipette
USD620602S1 (en) 2008-01-03 2010-07-27 Vistalab Technologies, Inc. Pipette
US20150100042A1 (en) * 2013-10-07 2015-04-09 Impel Neuropharma Inc. Muroid Family Nasal Device
FR3026658B1 (en) * 2014-10-02 2020-12-25 Gilson Sas PIPETTE TIP INCLUDING LIP SEAL
US10105708B1 (en) * 2015-04-29 2018-10-23 John L. Sternick Aspiration adapter and system
US10799871B1 (en) * 2015-04-29 2020-10-13 John L. Sternick Aspiration adapter and system
USD954988S1 (en) * 2019-06-10 2022-06-14 Corning Incorporated Stand for a handheld pipettor

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1039591A (en) * 1910-07-07 1912-09-24 William De Courcy Prideaux Hypodermic or other syringe.
FR711644A (en) * 1930-05-23 1931-09-14 Collin Et Cie Soc Advanced syringe to perform series of dosed and variable injections
US2161711A (en) * 1935-06-25 1939-06-06 Glenn A Keep Process for making sodium carbonate products
US2566436A (en) * 1947-10-11 1951-09-04 Cleveland Detroit Corp Beverage dispensing machine
US2959964A (en) * 1956-07-24 1960-11-15 Nat Children S Cardiac Hospita Pipette adaptor
CH334828A (en) * 1956-11-20 1958-12-15 Claude Sanz Manuel Burette
US2959170A (en) * 1957-12-26 1960-11-08 Ernest S V Laub Hypodermic syringe
US3013435A (en) * 1959-04-06 1961-12-19 Microchemical Specialties Co Buret
US3084592A (en) * 1959-11-20 1963-04-09 Willard L Scott Pipette construction

Also Published As

Publication number Publication date
CH440768A (en) 1967-07-31
FR1492062A (en) 1967-08-18
DE1598124B2 (en) 1975-05-22
US3244009A (en) 1966-04-05
GB1148242A (en) 1969-04-10
DE1598123B2 (en) 1975-05-22

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