NO338711B1 - Unit used to create gyro effect. Several units are placed around the load wire to prevent it from swinging from side to side as the rotational speed of the units is increased (29). - Google Patents
Unit used to create gyro effect. Several units are placed around the load wire to prevent it from swinging from side to side as the rotational speed of the units is increased (29). Download PDFInfo
- Publication number
- NO338711B1 NO338711B1 NO20161163A NO20161163A NO338711B1 NO 338711 B1 NO338711 B1 NO 338711B1 NO 20161163 A NO20161163 A NO 20161163A NO 20161163 A NO20161163 A NO 20161163A NO 338711 B1 NO338711 B1 NO 338711B1
- Authority
- NO
- Norway
- Prior art keywords
- unit
- units
- load wire
- prevent
- increased
- Prior art date
Links
- 230000000694 effects Effects 0.000 title description 4
- 230000005611 electricity Effects 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 19
- 238000004590 computer program Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor
- F03D3/02—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor having a plurality of rotors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
- B66C13/063—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads electrical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/021—Units comprising pumps and their driving means containing a coupling
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/12—Methods or apparatus for controlling the flow of the obtained fluid to or in wells
- E21B43/121—Lifting well fluids
- E21B43/128—Adaptation of pump systems with down-hole electric drives
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/12—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas
- H02K5/128—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs
- H02K5/1285—Casings or enclosures characterised by the shape, form or construction thereof specially adapted for operating in liquid or gas using air-gap sleeves or air-gap discs of the submersible type
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
Description
Roterende enheter (33) som benyttes for å Rotating units (33) which are used to
skape «gyro effekt» omring lastewire. create a "gyro effect" around the load wire.
Flere enheter (33) benyttes omkring lastewire på en Several units (33) are used around the load wire on one
anordning for å motvirke slingring fra side til side på device to prevent swaying from side to side on
wiren når rotasjonshastigheten økes på enhetene. the wire when the rotation speed is increased on the units.
Elektrisitet tilføres via kabel, eller via batteri og de Electricity is supplied via cable, or via battery and those
roterende enhetene (33) reguleres med dataprogram som fjernstyres via signal, eller styres via kable og dataprogram. the rotating units (33) are regulated with a computer program that is remotely controlled via signal, or controlled via cable and computer program.
Enheten (33) bygges opp med at flere enheter (M) med strømførende akslinger monteres i serier inn mot rotor (29) som benyttes til å skape gyro effekt, The unit (33) is built up by several units (M) with current-carrying shafts being mounted in series towards the rotor (29) which is used to create a gyro effect,
gravitasjonskraft. Elektronisk oppgiring mellom enhetene (M) gir høy rotasjonshastighet på enhet (29) som har høy egenvekt. Flere enheter (33) monteres sammen omkring lastewiren og rotasjonshastigheten på rotorene reguleres etter ønsket effekt som er nærmere beskrevet i patentkravene. gravitational force. Electronic gearing between the units (M) gives a high rotation speed on unit (29) which has a high specific weight. Several units (33) are assembled around the load wire and the rotation speed of the rotors is regulated according to the desired effect, which is described in more detail in the patent claims.
Det kan benyttes fluid strømning på turbin (31) og Fluid flow can be used on the turbine (31) and
generator (M3) overfører energi til enheten (M2). generator (M3) transfers energy to the device (M2).
Av kjent teknikk omhandler Publikasjon US 7627393 B2 Publication US 7627393 B2 deals with prior art
en anordning for å traversere en last som henger i en wire, hvor anordningen består av et datastyrt reguleringssystem for å dempe svingningene på lasten. a device for traversing a load hanging from a wire, where the device consists of a computerized regulation system to dampen the oscillations of the load.
Vinkel og hastighet på svingningene beregnes ved hjelp Angle and speed of the oscillations are calculated using
av signal fra et gyroskop. of signal from a gyroscope.
Publikasjonen viser ikke at flere enheter er montert The publication does not show that more units have been installed
sammen og at flere enheter er plassert rundt en lastwire på en anordning som er montert fast til lastewire together and that several units are placed around a load wire on a device that is fixed to the load wire
Teknisk beskrivelse: Technical description:
Fig 1 ses som et tverrsnitt sett fra siden. Enhet (1) som har sylinderform (2) hvor anordning (3) med elektronikk tres inn på enheten og låses fast i spor slik at anordningene ikke vrir seg på enheten. Delene låses sammen med bolter og muttere. Delene kan også ha gjenger slik at delene skrues inn i hverandre. Fig 1 is seen as a cross-section seen from the side. Unit (1) which has a cylindrical shape (2) where device (3) with electronics is threaded onto the unit and locked in a slot so that the devices do not twist on the unit. The parts are locked together with bolts and nuts. The parts can also have threads so that the parts are screwed into each other.
Røret (2) kan ha strømledere som leder strøm inn til modulene med elektronikk (3). Modulene benyttes til omforming av strøm, signalstyring, regulator eller annen form for elektronikk. The pipe (2) may have current conductors that conduct current into the modules with electronics (3). The modules are used to transform power, signal control, regulators or other forms of electronics.
Fig 2 ses som et tverrsnitt sett fra siden. To enheter (1) settes mot hverandre og det monteres på rotor / stator. Rotor / stator opplagres med kulelager (4) på begge enhetene (1). Aksling monteres fast i senter på rotor / stator (5). Strømledere (5) i stator / rotor overfører strøm fra aksling inn på spole (6). Strømmen / elektrisiteten kan også ledes inn på anordningene med elektronikk og omformes før den benyttes på stator / rotor. Det benyttes børster imellom stator / rotor og anordningene med elektronikk. Det kan også benyttes strømleder istedenfor for børster. Fig 2 is seen as a cross-section seen from the side. Two units (1) are placed against each other and mounted on the rotor / stator. The rotor / stator is stored with ball bearings (4) on both units (1). The shaft is fixed in the center of the rotor / stator (5). Current conductors (5) in the stator / rotor transfer current from the shaft into the coil (6). The current / electricity can also be fed into the devices with electronics and transformed before it is used on the stator / rotor. Brushes are used between the stator / rotor and the devices with electronics. Current conductors can also be used instead of brushes.
Magneter / strømledere (7) monteres fast mellom enhetene (1). Magnets / current conductors (7) are fixed between the units (1).
Fig 3 ses som et tverrsnitt sett fra siden. Aksling med isolert strømleder/e i senter (8) skrues inn på aksling del (10) med strømledere på utsidene som leder elektrisitet inn på stator / rotor (5). Akslingen opplagres i begge endene (9) med kulelager. Sylinderformet deksel (11) tres inn på enheten og låses med bolter til modul enhetene (1). Deksel har spor på begge sidene (14, 15) som benyttes når flere enheter (M) monteres sammen. Disse sporene (14,15) kan også benyttes med kontakter for å overføre elektrisitet / signal mellom flere enheter (M). Børster / strømledere (16) som overfører elektrisitet mellom stator / rotor og modulene med elektronikk, overfører også strøm til strømleder/e i aksling (10) via stator/ rotor. Tilkobling (12, 13) aksling med kontakt slik at strømlederne i akslingene blir sammenhengende om flere enheter monteres sammen i hverandre. Fig 4 viser figur sett fra siden. Deksel (17) med strøminntak som kan monteres på enhet (M1). Benyttes det enheter på begge sidene på enhet (M1), så er strøminntaket på langsiden (23) til enhet (M2). Akslingene i enhet (M1) og i enhet (M2) skrues sammen (18) slik at strømlederne i akslingene blir sammenhengende. Det benyttes glatte deksel (20) slik at enhetene ikke kommer i kontakt med hverandre. Mellom enhet (M2) og enhet (M3) benyttes det en enhet (19) som skrues fast til enhet (M2). Enheten (19) har ikke kontakt med akslingen i enhet (M2). Enheten (19) har strømledere som overfører elektrisitet fra enhet (M2) til enhet (M3). Enheten (19) kan også benyttes som elektromagnet hvor elektrisiteten som passerer igjennom enheten benyttes i vikling / elektromagnet. Aksling i enhet (M3) skrues inn på enhet (19) slik at elektrisitet overføres til stator / rotor i enhet (M3). Det benyttes glatt deksel (20) på enhet (M3) slik at det er kun aksling i enheten (M3) som er tilkoblet enhet (19) som benyttes mellom enhetene (M2) og (M3). Fig 5 viser figur sett fra siden. To aksling deler (8) med strømleder i senter skrues inn på hver sin side på aksling del (10) med strømledere på utsiden. Elektrisitet som ledes igjennom akslingen vil overføres til stator / rotor via aksling del (10) med utvendige strømledere. Stator / rotor kan også bygges direkte på aksling del i midten (10). Fig 3 is seen as a cross-section seen from the side. Shaft with insulated current conductor(s) in the center (8) is screwed onto the shaft part (10) with current conductors on the outside which conduct electricity into the stator / rotor (5). The shaft is supported at both ends (9) with ball bearings. The cylindrical cover (11) is threaded onto the unit and locked with bolts to the module units (1). The cover has grooves on both sides (14, 15) which are used when several units (M) are assembled together. These tracks (14,15) can also be used with contacts to transfer electricity / signal between several units (M). Brushes / current conductors (16) which transfer electricity between the stator / rotor and the modules with electronics, also transfer current to current conductors in the shaft (10) via the stator / rotor. Connection (12, 13) shaft with contact so that the current conductors in the shafts are connected if several units are assembled together. Fig 4 shows the figure seen from the side. Cover (17) with power inlet that can be mounted on unit (M1). If units are used on both sides of unit (M1), then the current intake is on the long side (23) of unit (M2). The shafts in unit (M1) and in unit (M2) are screwed together (18) so that the current conductors in the shafts are connected. A smooth cover (20) is used so that the units do not come into contact with each other. Between unit (M2) and unit (M3) a unit (19) is used which is screwed to unit (M2). The unit (19) does not have contact with the shaft in unit (M2). The unit (19) has current conductors that transfer electricity from unit (M2) to unit (M3). The unit (19) can also be used as an electromagnet where the electricity that passes through the unit is used in the winding / electromagnet. Shaft in unit (M3) is screwed onto unit (19) so that electricity is transferred to stator / rotor in unit (M3). A smooth cover (20) is used on unit (M3) so that only the shaft in unit (M3) is connected to unit (19) which is used between units (M2) and (M3). Fig 5 shows the figure seen from the side. Two shaft parts (8) with power conductors in the center are screwed in on either side of the shaft part (10) with power conductors on the outside. Electricity that is conducted through the shaft will be transferred to the stator / rotor via the shaft part (10) with external current conductors. Stator / rotor can also be built directly on the shaft part in the middle (10).
Fig 6 viser et tverrsnitt av figuren sett fra siden. Enhet (19) monterer fast (24) til enhet (M2). Elektrisitet og signal overføres mellom enhetene via kontakter (14,15). Det er ikke kontakt (26) mellom aksling i enhet (M2) og enhet (19). Enhet (M2) monteres til (18) aksling i enhet (M1). Glatt deksel (20) mellom enhet (M1) og enhet (M2). Elektrisitet og signal overføres via strømledere i akslingene til enhetene (M1 og M2). Enhet (M1) tilkobles (28) rotor (29) som har høy egenvekt og som roterer rundt egen akse innvendig i et rotorhus (30). Aksling i enhet (M1) er ikke i kontakt (27) med enhet (29). Enhetene (M) benyttes på begge sidene på rotor (29), med økende rotasjonshastighet inn mot enhet (29). Enhet (M3) benyttes som vifte (31) for kjøling i område (32) rundt rotor (29). Enheten (M3) kan også benyttes som generator med turbin (31). Elektrisitet fra enheten (M3) overføres (25) fra aksling og til enhet (19), og fra enhet (19) til enhet (M2). Enhet med riller (21) låser enheten (M2) og enhet (19) til rotorhus (30). Enheten (21) har Fig 6 shows a cross-section of the figure seen from the side. Unit (19) mounts firmly (24) to unit (M2). Electricity and signal are transferred between the units via contacts (14,15). There is no contact (26) between the shaft in unit (M2) and unit (19). Unit (M2) is mounted to (18) shaft in unit (M1). Smooth cover (20) between unit (M1) and unit (M2). Electricity and signal are transmitted via current conductors in the shafts of the units (M1 and M2). Unit (M1) is connected (28) to rotor (29) which has a high specific gravity and which rotates around its own axis inside a rotor housing (30). Shaft in unit (M1) is not in contact (27) with unit (29). The units (M) are used on both sides of the rotor (29), with increasing rotation speed towards unit (29). Unit (M3) is used as fan (31) for cooling in area (32) around rotor (29). The unit (M3) can also be used as a generator with turbine (31). Electricity from the unit (M3) is transferred (25) from the shaft and to the unit (19), and from the unit (19) to the unit (M2). Unit with grooves (21) locks unit (M2) and unit (19) to rotor housing (30). The unit (21) has
strømledere (23) inn til enhet (M2). Alternative strømledere (22) inn til enhet (19). Det kan benyttes gjennomgående aksling som forbinder enhetene (M1) på begge sidene av enhet (29). Hulrom igjennom enheten (29) forhindrer kontakt med gjennomgående aksling med strømledere. current conductors (23) into unit (M2). Alternative current conductors (22) into unit (19). Continuous shafting can be used that connects the units (M1) on both sides of unit (29). Cavities through the unit (29) prevent contact of the through shaft with current conductors.
Fig 7 viser et tverrsnitt av figuren sett fra siden. Flere enheter (33) er montert sammen. Strømlederne (25) vil bli sammenhengene igjennom enhet/ene (M3). Enhetene kan også monteres sammen på enhet (M2). Fig 7 shows a cross-section of the figure seen from the side. Several units (33) are assembled together. The current conductors (25) will become the connections through the unit(s) (M3). The units can also be mounted together on unit (M2).
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20160103A NO338432B1 (en) | 2016-01-20 | 2016-01-20 | High speed rotor. Motor units (M) that will allow multiple units to be assembled into a larger and more powerful unit. The motor unit is then used in series to provide high rotational speed |
Publications (2)
Publication Number | Publication Date |
---|---|
NO338711B1 true NO338711B1 (en) | 2016-10-03 |
NO20161163A1 NO20161163A1 (en) | 2016-10-03 |
Family
ID=61800185
Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20160103A NO338432B1 (en) | 2016-01-20 | 2016-01-20 | High speed rotor. Motor units (M) that will allow multiple units to be assembled into a larger and more powerful unit. The motor unit is then used in series to provide high rotational speed |
NO20160592A NO20160592A1 (en) | 2016-01-20 | 2016-04-12 | Wind turbine with wind turbines that rotate independently of each other and where electrical and mechanical gearing is used |
NO20160669A NO20160669A1 (en) | 2016-01-20 | 2016-04-21 | Pump |
NO20161163A NO20161163A1 (en) | 2016-01-20 | 2016-07-13 | Device used to create gyro effect. Several units are placed around the load wire to prevent it from swinging from side to side as the rotational speed of the units increases (29). |
Family Applications Before (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20160103A NO338432B1 (en) | 2016-01-20 | 2016-01-20 | High speed rotor. Motor units (M) that will allow multiple units to be assembled into a larger and more powerful unit. The motor unit is then used in series to provide high rotational speed |
NO20160592A NO20160592A1 (en) | 2016-01-20 | 2016-04-12 | Wind turbine with wind turbines that rotate independently of each other and where electrical and mechanical gearing is used |
NO20160669A NO20160669A1 (en) | 2016-01-20 | 2016-04-21 | Pump |
Country Status (1)
Country | Link |
---|---|
NO (4) | NO338432B1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7627393B2 (en) * | 2000-10-19 | 2009-12-01 | Liebherr-Werk Nenzing Gmbh | Crane or digger for swinging a load hanging on a support cable with damping of load oscillations |
US20110218714A1 (en) * | 2008-12-15 | 2011-09-08 | Scheider Toshiba Inverter Europe Sas | Device for controlling the movement of a load suspended from a crane |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE451392B (en) * | 1981-05-29 | 1987-10-05 | Josef Hoff | Frame for rotor-type wind motor |
US6616402B2 (en) * | 2001-06-14 | 2003-09-09 | Douglas Spriggs Selsam | Serpentine wind turbine |
US8197179B2 (en) * | 2001-06-14 | 2012-06-12 | Douglas Spriggs Selsam | Stationary co-axial multi-rotor wind turbine supported by continuous central driveshaft |
JP5142810B2 (en) * | 2008-05-09 | 2013-02-13 | カヤバ工業株式会社 | Suspension device |
NO331605B1 (en) * | 2009-12-11 | 2012-02-06 | Ingenium As | Wind Power Generation System |
CN101956675B (en) * | 2010-10-28 | 2012-06-20 | 马可超 | Jet-propelled wind driven generator |
DE202011003442U1 (en) * | 2011-03-02 | 2011-06-22 | G&S World Bridge Trading Ag | Device for using wind power with at least one rotor |
BR112015005555A2 (en) * | 2012-09-12 | 2018-05-22 | Fmc Tech Inc | underwater compressor or pump with hermetically sealed electric motor with magnetic coupling |
GB2508868A (en) * | 2012-12-13 | 2014-06-18 | Johnson Electric Sa | Suspension system for the rotor of a linear actuator |
SE1330086A1 (en) * | 2013-07-02 | 2015-01-03 | Mansour Kazempour | Generator with varying number of rotors and stators |
CN105683562B (en) * | 2013-09-06 | 2018-03-27 | 弗特诺瓦有限责任公司 | Free-standing generating vertical axis wind turbine system |
-
2016
- 2016-01-20 NO NO20160103A patent/NO338432B1/en not_active IP Right Cessation
- 2016-04-12 NO NO20160592A patent/NO20160592A1/en not_active IP Right Cessation
- 2016-04-21 NO NO20160669A patent/NO20160669A1/en not_active IP Right Cessation
- 2016-07-13 NO NO20161163A patent/NO20161163A1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7627393B2 (en) * | 2000-10-19 | 2009-12-01 | Liebherr-Werk Nenzing Gmbh | Crane or digger for swinging a load hanging on a support cable with damping of load oscillations |
US20110218714A1 (en) * | 2008-12-15 | 2011-09-08 | Scheider Toshiba Inverter Europe Sas | Device for controlling the movement of a load suspended from a crane |
Non-Patent Citations (1)
Title |
---|
JERMAN, B. KRAMAR, J.: "A study of the horizontal inertial forces acting on the suspended load of slewing cranes", INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES., PERGAMON PRESS, OXFORD., GB, vol. 50, no. 3, 1 March 2008 (2008-03-01), GB, pages 490 - 500, XP022511039, ISSN: 0020-7403, DOI: 10.1016/j.ijmecsci.2007.09.013 * |
Also Published As
Publication number | Publication date |
---|---|
NO338545B1 (en) | 2016-09-05 |
NO20160592A1 (en) | 2016-09-05 |
NO20160103A1 (en) | 2016-08-15 |
NO338432B1 (en) | 2016-08-15 |
NO20161163A1 (en) | 2016-10-03 |
NO338546B1 (en) | 2016-09-05 |
NO20160669A1 (en) | 2016-09-05 |
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CHAD | Change of the owner's name or address (par. 44 patent law, par. patentforskriften) |
Owner name: FRODE OLSEN, NO |
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CHAD | Change of the owner's name or address (par. 44 patent law, par. patentforskriften) |
Owner name: FRODE OLSEN, NO |
|
MM1K | Lapsed by not paying the annual fees |