CN108370182A - Pawl with the chamfered section with curve form, electric rotating machine claw rotor - Google Patents
Pawl with the chamfered section with curve form, electric rotating machine claw rotor Download PDFInfo
- Publication number
- CN108370182A CN108370182A CN201680070367.8A CN201680070367A CN108370182A CN 108370182 A CN108370182 A CN 108370182A CN 201680070367 A CN201680070367 A CN 201680070367A CN 108370182 A CN108370182 A CN 108370182A
- Authority
- CN
- China
- Prior art keywords
- pawl
- chamfered section
- rotor
- rotor according
- magnet
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/243—Rotor cores with salient poles ; Variable reluctance rotors of the claw-pole type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/04—Windings on magnets for additional excitation ; Windings and magnets for additional excitation
- H02K21/042—Windings on magnets for additional excitation ; Windings and magnets for additional excitation with permanent magnets and field winding both rotating
- H02K21/044—Rotor of the claw pole type
Abstract
The invention mainly relates to a kind of rotors of the electric rotating machine of motor vehicles, it includes at least one pole wheel (24,25), at least one pole wheel includes multiple pawls (29), at least one pawl (29) has at least one chamfered section (57,57') along the edge (51,52) extended between the base portion of the pawl (29) and free end (54), the rotor is characterized in that, the chamfered section (57,57') has the radial section for being arc-shaped shape.
Description
Technical field
The present invention relates to a kind of claw rotors of electric rotating machine, have the pawl of the chamfered section with curve form.This hair
Bright alternating current generator and reversible electric machine field for motor vehicles has particularly advantageous but nonexcludability application.Exchange
Generator converts mechanical energy into electric energy.Reversible machine can also convert electrical energy into mechanical energy, especially for starting vehicle
Thermal Motor.
Background technology
In known manner, the alternating current generator described in document EP0762617 includes shell, and inside housings straight
It connects or the claw rotor that is rotated integrally indirectly with axis and the stator that rotor is surrounded there are air gap.Pulley is fixed
On the front end of axis.
Stator includes the ontology in the form of one group of plate, which is provided with recess, and recess is equipped with for assembling stator
The recess insulator of winding.Winding includes multiple phase windings, passes through recess in the body, and together with all phase windings
Preceding hair worn in a bun or coil shape portion and rear hair worn in a bun or coil shape portion are formed in the both sides of stator body.Winding is for example by the continuous conductors that are covered with enamel or by being in
The conducting element (pin of such as " U "-shaped formula) of the form of stick obtains, and end is for example connected to each other by welding.
These phase windings are, for example, the three-phase windings connected with star or triangular form, and output is connected to including rectification
At least one electron rectifier module of device element (such as diode or transistor).
In addition, rotor includes two magnet-wheels.Each wheel has the flange with horizontal orientation, is provided in flange outer periphery
Pawl, pawl is for example with tapered in form and axial orientation.The pawl of one wheel is axially facing the flange of another wheel.Each pawl of magnet-wheel
It penetrates in the space between being present in two adjacent pawls of another magnet-wheel so that the pawl of magnet-wheel is overlapped into watt relative to each other
Shape.Cylindrical core is axially planted between the flange of wheel.The core supports Exciting Windings for Transverse Differential Protection on their outer circumference, Exciting Windings for Transverse Differential Protection winding
It is inserted in the insulator between core and the winding radially.
Known such motor sends out acoustic noise caused by the vibration generated by existing magnetic force.It is this in order to make
Noise minimization, as described in document US5708318, it is however known to provide the chamfered section with planar in form on the edge of pawl.
However, such chamfered section cannot obtain the acoustics and electric property required by motor vehicle manufacturers in some cases
It is horizontal.
Invention content
Therefore, the purpose of the present invention is to improve the sound of machine by a kind of rotor of the electric rotating machine of motor vehicles of proposition
It learns and electric property, the rotor includes at least one magnet-wheel, at least one magnet-wheel includes multiple pawls, at least one pawl packet
Include at least one chamfered section on the edge for being set to and extending between the base portion and free end of the pawl, the spy of the rotor
Sign is that the chamfered section has the radial section in the form of circular arc.Radial section corresponds to pawl and perpendicular to rotor axis
Plane between cross part.
Compared with the chamfering cage structure with straight section, therefore the present invention can obtain the gentler of the magnetic flux in air gap
Variation, so as to improve anti-acoustic capability, while increasing the electric current exported by motor.
According to one embodiment, the ratio of the radius of curvature of chamfered section and the outer radius of rotor is 0.5 to 0.9.This is than being
Particularly advantageous, to make the magnetic noise minimization of machine in especially 1800 to the 4000rpm range of speeds.
According to one embodiment, the center at the center and the circle for the curvature for forming chamfered section of the circle of the excircle of rotor is formed
The distance between ratio between the outer radius of the rotor be 0.1 to 0.5.
According to one embodiment, the chamfered section is arranged in the back edge of pawl.
According to one embodiment, the chamfered section is arranged on the leading edge of pawl.
According to one embodiment, pawl includes the chamfered section in the form of circular arc being arranged on leading edge and is arranged in back
The chamfered section in the form of circular arc on edge.
According to one embodiment, the free end of surface area towards the corresponding pawl of the chamfered section reduces.
According to one embodiment, the surface area of chamfered section is substantially zeroed at the free end of pawl.
According to one embodiment, pawl has outer radial face and the chamfered section is arranged in the outer radial face.
According to one embodiment, chamfered section is axially extending between the base portion and free end of corresponding pawl.
According to one embodiment, the pawl of the magnet-wheel is symmetrical.
According to one embodiment, the pawl of the magnet-wheel is asymmetric.
According to one embodiment, the rotor includes interpolar magnet, and each interpolar magnet is positioned at two continuous pawls point
In the space opened.
According to one embodiment, the maximum width of the chamfered section and the ratio of pole span are 0.16 to 0.37.
The invention further relates to a kind of alternating current generator or the electric rotating machines of reversible machine type, which is characterized in that it includes
Rotor as defined above.
Description of the drawings
The present invention may be better understood by reading to be described below and consult accompanying drawing.These attached drawings be purely with
The mode of the description of the invention and provide, and be in no way intended to limit the present invention.In the accompanying drawings:
Fig. 1 is the longitudinal cross-section schematic diagram of alternating current generator according to the present invention;
Fig. 2 is the schematic diagram of the top of the pawl of the magnet-wheel according to the present invention for being equipped with double chamfered sections;
Fig. 3 is the schematic diagram of the front of the pawl of magnet-wheel according to the present invention, shows the form of the circular arc of chamfered section;
Fig. 4 is the noise water for illustrating that alternating current generator according to the ratio of the radius of curvature of chamfered section and the outer radius of rotor
The curve graph of two flat curves, every curve correspond to the specific rotation speeds of alternating current generator;
Fig. 5 shows the schematic variants embodiment of the rotor according to the present invention with asymmetric pawl.
Specific implementation mode
Identical, similar or similar element retains identical reference from a figure to another figure.Below in the description,
Think that " front " element is located at the pulley side of machine, and " rear portion " element is located at opposite side.
Fig. 1 shows compact polyphase alternators 10, are especially used for motor vehicles.The alternating current generator 10 will be mechanical
Electric energy can be converted to, and can be reversible.Such reversible alternating current generator 10 is referred to as alternating current generator-and rises
Dynamic device, can convert electrical energy into mechanical energy, especially for the Thermal Motor for starting vehicle.
The alternating current generator 10 includes shell 11 and the rotor 12 inside shell 11 and stator 16, carries the rotor of pawl
12 are assemblied on axis 13, and stator 16 surrounds rotor 12 there are air gap 17.Pulley 14 is fixed on axis 13.The pulley
14 belong to the device for transmitting movement by the belt between alternating current generator 10 and the Thermal Motor of motor vehicles.Axis 13
Axis X formed rotor 12 and magnet-wheel 24,25 rotation axis.
Stator 16 includes the ontology 19 in the form of one group of plate, which is provided with recess, such as semi-closed type
Recess, recess insulator of the recess equipped with the phase for assembling stator 16.Each includes mutually at least one winding, it is described at least
One winding passes through the recess in the ontology 19 of stator 16, and the hair worn in a bun or coil before the both sides of stator body 19 are formed together with all phases
Shape portion 20 and rear hair worn in a bun or coil shape portion 21.
Winding for example (such as passes through welding by the continuous conductors that are covered with enamel or by the conducting element in the form of stick
The pin being connected to each other) it obtains.These windings are, for example, three-phase windings, are connected in the form of star or triangle, and output connects
It is connected at least one rectifier bridge, which includes rectifier element, such as diode or MOSFET
The transistor of type, especially when being related to the alternator-starter described in such as document FR2745445.
Rotor 12 includes two magnet-wheels 24,25, and each magnet-wheel has the flange 28 with horizontal orientation, and the flange 28 is outside it
Pawl 29 is provided on week, pawl 29 is for example with tapered in form and axial orientation.The pawl 29 of one wheel 24,25 is axially facing another
The flange 28 of wheel.Each pawl 29 of magnet-wheel 24,25 penetrates in the space between being present in two adjacent pawls 29 of another magnet-wheel,
So that the pawl 29 of magnet-wheel 24,25 is overlapped tile shape relative to each other.
The inner circumferential of the periphery of pawl 29 and the ontology 19 of stator 16 together defines the air gap 17 between stator 16 and rotor 12.
The inner circumferential of pawl 29 is inclined so that pawl 29 is thinner on its free end side 54.
Cylindrical core 30 is axial to be plugged between the flange 28 of wheel 24,25.In this case, core 30 is belonged to respectively by two
One half core in flange 28 is constituted.The core 30 supports the magnet exciting coil 31 being wrapped in insulator 32 on their outer circumference,
Insulator 32 is radially plugged between core 30 and coil 31.
In addition, shell 11 includes the fore bearing 35 fitted together and rear bearing 36.Bearing 35,36 has hollow form,
And each ball bearing 37,38 in central supported for the rotatably axis 13 of assembly rotor.The support of bearing 36 afterwards is provided with electricity
41 brush holder 40 is brushed, brush 41 is designed to rub against the ring 44 of collector 45, which is connected by conducting wire and connected
To Exciting Windings for Transverse Differential Protection 31.Brush 41 is electrically connected to the voltage regulator being assemblied on the outside of machine.
Fore bearing 35 and rear bearing 36 include open front 60 and after-opening 61 laterally substantially, to allow by by fixed
The sky that the rotation of fan 62 and another fan 63 that is located in the rear of rotor on of the position on the forward face of rotor 12 generates
The circulation of gas cools down alternating current generator 10.Each fan 62,63 is provided with multiple blades 64.Preceding lateral openings 60 and rear side to
Opening 61 is opposite with preceding hair worn in a bun or coil shape portion 20 and rear hair worn in a bun or coil shape portion 21 respectively.
More specifically, as shown in Fig. 2, with tapered in form each pawl 29 include leading edge 51 and back edge 52, should
Leading edge 51 is contacted with air first according to the direction of rotation of the rotor 12 indicated by arrow SR, before back edge 52 is located relative to
On the opposite side at edge 51.These edges 51,52 extend between the base portion 53 of pawl 29 and the free end 54 of pawl 29, pawl 29
The periphery part superposition of base portion 53 and corresponding flange 28.
In this case, the first chamfered section 57 is arranged in the back edge 52 of each pawl 29 of magnet-wheel 24,25.Show at this
In example, the second chamfered section 57' is arranged on the leading edge 51 of each pawl 29 of magnet-wheel 24,25.Chamfered section 57,57' are arranged in pawl
In 29 outer radial face 56.Chamfered section 57,57' are axially extending between base portion 53 and the free end 54 of corresponding pawl 29, i.e.,
Entire axial length along pawl extends.
Preferably, there is the free end 54 of the chamfered section 57 of whole triangular form, surface area towards the pawl 29 of 57' to subtract
It is small.The surface area of chamfered section 57 is substantially zeroed at the free end 54 of pawl 29.
It can be clearly seen that each chamfered section 57,57' have the radial section for the formula that is arc-shaped from Fig. 3.It is radial
Section corresponds to the cross part between pawl 29 and the plane of the axis X perpendicular to magnet-wheel 24,25.Compared with straight chamfering cage structure,
Therefore gentler variation that the present invention can obtain the magnetic flux in air gap 17 increases simultaneously so as to improve anti-acoustic capability
The electric current exported by motor.
It is limited between chamfered section 57, the radius of curvature R a of 57' and the outer radius Rr of rotor 12 than R1, i.e. R1=Ra/Rr.
It is preferably 0.5 to 0.9 than R1.As shown in figure 4, this is than for minimizing the range of speeds especially 1800 to 4000rpm
The magnetic noise of interior motor is particularly advantageous (referring to the curve A1 of the speed for 1800rpm and for the speed of 4000rpm
Curve A2).It should be noted that aforesaid operations velocity interval does not correspond to the minimum and maximum operation speed of alternating current generator
Degree, and a velocity interval is corresponded to, for the velocity interval, has significant horizontal and do not covered by the aerodynamic noise of fan
Magnetic noise must be attenuated.
In addition, being limited than R2, i.e. R2=EC/Rr between distance EC and the outer radius Rr of rotor 12.It is preferably 0.1 than R2
To 0.5.Center C2s of the distance EC in the center C1 of the circle for the excircle for forming rotor 12 and the circle of the curvature of formation chamfered section 57
Between measure.
It is limited than R3, i.e. R3=Chb_max/Tp also between the maximum width Chb_max of chamfered section 57 and pole span Tp.Tp
Equal to the ratio between the inner periphery of stator and the number of poles of machine, i.e. Tp=π D/2p, wherein D is the interior diameter of stator, and p is machine
Number of pole-pairs.This is 0.16 to 0.37 than R3.Maximum width Chb_max is being parallel to corresponding magnet-wheel 24,25 according to circumferencial direction
Flange 28 sagittal plane plane on measure.
As shown in the table, such construction makes it possible to drop in the best way in all operationss range of rotor 12
Low magnetic noise and the output current for increasing machine.
In fact, compared with traditional straight chamfering cage structure, for wider chamfered section (Chb_max=7mm), using in
The chamfered section of arc form obtains the lower noise more than 5dB.In addition, compared with traditional straight chamfering cage structure, obtain big
In the output current enhancing of the motor of 5A.
Preferably, chamfered section 57 is arranged on the leading edge 51 and back edge 52 of each pawl 29.As modification, chamfered section
57,57' is provided only in the back edge 52 or leading edge of pawl 29.As modification, only certain pawls 29 of magnet-wheel include chamfered section
Or double chamfered sections, other pawls 29 do not have chamfered section.
In addition, the first chamfered section 57 and the second chamfered section 57' radius of curvature R a having the same.
It is different from each other with each associated radius of curvature in chamfered section 57,57' according to a modification.For example, magnetic
One pawl 29 in wheel 24 can respectively have the first chamfered section 57, and first chamfered section 57 is more associated than R1 with first, should
First than R1 in terms of for the lower noise of the low speed of speed range of operation is best.The pawl 29 of another magnet-wheel 25 can be with
Respectively have the second chamfered section 57', the second chamfered section 57' is associated with the second speed ratio R1', this second than R1' for behaviour
It is best in terms of making the lower noise of the high speed of velocity interval.It is 0.7 than R1 for example, for 1800rpm, for
4000rpm is 0.6 than R1'.Such construction allows on the whole operation range P of rotor 12 in the best way
Minimize magnetic noise.
In embodiment, the pawl 29 of magnet-wheel 24,25 is symmetrical, i.e. the center by base portion 53 that can see in Fig. 2
Middle site M also pass through the free end 54 of pawl 29.
According to a modification, as shown in figure 5, the pawl 29 of magnet-wheel 24,25 is asymmetric, that is, pass through the base portion 53 of pawl 29
Parallel lines offsets of the middle site M at center relative to the free end 54 by corresponding pawl 29.Asymmetric pawl 29 can be with
It is tilted along direction of rotation SR (referring to arrow F1) or along the direction (referring to arrow F2) opposite with direction of rotation SR.As shown in figure 5,
The pawl 29 of two magnet-wheels 24,25 can tilt in the same direction or in opposite directions.
As shown in Figure 2 and Figure 5, if applicable, rotor 12 may include interpolar magnet 46, and each interpolar magnet 46 is fixed
Inside by the separated space 66 of two continuous pawls 29.Magnet 46 can be positioned at the inside of all interelectrode spaces 66,
Or it is only located at the inside of some of which, and the circumference regular distribution of rotor 12 can be surrounded.Magnet 46 can be by dilute
Earth elements NeFeB (neodymium iron boron) or SmCo (SmCo) are made.The selection of material and the quantity of interpolar magnet 46 make it possible to be easy
Ground makes the required power of the magnetic characteristic adaptation alternating current generator of rotor 12.
It is understood that the description of front purely provides in an illustrative manner, it does not limit the scope of the invention,
The deviation from the scope of the present invention will not be made up of any other equivalent replacement different elements.
Claims (15)
1. a kind of rotor (12) of electric rotating machine of motor vehicles, including at least one magnet-wheel (24,25), at least one magnetic
Wheel includes multiple pawls (29), and at least one pawl (29) includes the free end (54) and base portion (53) being set in the pawl (29)
Between at least one chamfered section (57,57') on the edge (51,52) that extends,
The rotor (12) is characterized in that, the chamfered section (57,57') has the radial section in the form of circular arc.
2. rotor according to claim 1, which is characterized in that the radius of curvature (Ra) of the chamfered section (57) and described turn
The ratio of the outer radius (Rr) of sub (12) is 0.5 to 0.9.
3. rotor according to claim 1 or 2, which is characterized in that formed in the circle of the excircle of the rotor (12)
The distance between the heart (C1) and the center (C2) of circle of curvature that forms the chamfered section (57,57') (EC) and the rotor
Ratio between outer radius is 0.1 to 0.5.
4. rotor according to any one of claim 1 to 3, which is characterized in that the chamfered section (57,57') setting exists
In the back edge (52) of pawl (29).
5. rotor according to any one of claim 1 to 3, which is characterized in that the chamfered section (57,57') setting exists
On the leading edge (51) of pawl (29).
6. rotor according to any one of claim 1 to 5, which is characterized in that pawl (29) includes being arranged in leading edge
(51) chamfered section in the form of circular arc of chamfered section (57') and setting in back edge (52) in the form of circular arc on
(57)。
7. rotor according to any one of claim 1 to 6, which is characterized in that the surface of the chamfered section (57,57')
Product reduces towards the free end (54) of corresponding pawl (29).
8. rotor according to claim 7, which is characterized in that the surface area of the chamfered section (57,57') is described
It is substantially zeroed at the free end (54) of pawl (29).
9. rotor according to any one of claim 1 to 8, which is characterized in that the pawl (29) has outer radial face
(56), and it is, the chamfered section (57,57') is arranged in the outer radial face (56).
10. rotor according to any one of claim 1 to 9, which is characterized in that the chamfered section (57,57') is in correspondence
It is axially extending between the base portion (53) and the free end (54) of pawl (29).
11. rotor according to any one of claim 1 to 10, which is characterized in that the pawl of the magnet-wheel (24,25)
(29) it is symmetrical.
12. rotor according to any one of claim 1 to 10, which is characterized in that the pawl of the magnet-wheel (24,25)
(29) it is asymmetric.
13. rotor according to any one of claim 1 to 12, which is characterized in that the rotor includes interpolar magnet
(46), be positioned at will be in the separated space (66) of two continuous pawls (29) for each interpolar magnet.
14. rotor according to any one of claim 1 to 13, which is characterized in that the chamfered section (57,57') is most
The ratio of big width (Chb_max) and pole span (Tp) is 0.16 to 0.37.
15. the electric rotating machine of a kind of alternating current generator or reversible machine type, which is characterized in that it includes being wanted according to aforementioned right
Any one of seek the rotor limited.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1561632 | 2015-12-01 | ||
FR1561632A FR3044483B1 (en) | 2015-12-01 | 2015-12-01 | ELECTRIC ROTOR ROTOR WITH ROTATING ELECTRICAL MACHINE WITH CURVED SHAFT GRIFFLES |
PCT/FR2016/053060 WO2017093636A1 (en) | 2015-12-01 | 2016-11-23 | Claw rotor of a rotating electrical machine, provided with claws having a curved chamfer |
Publications (1)
Publication Number | Publication Date |
---|---|
CN108370182A true CN108370182A (en) | 2018-08-03 |
Family
ID=55411546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201680070367.8A Pending CN108370182A (en) | 2015-12-01 | 2016-11-23 | Pawl with the chamfered section with curve form, electric rotating machine claw rotor |
Country Status (4)
Country | Link |
---|---|
CN (1) | CN108370182A (en) |
DE (1) | DE112016005481T5 (en) |
FR (1) | FR3044483B1 (en) |
WO (1) | WO2017093636A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3080717B1 (en) * | 2018-04-27 | 2021-01-22 | Valeo Equip Electr Moteur | TOUNANTE ELECTRIC MACHINE ROTOR EQUIPPED WITH AN OPTIMIZED DISTRIBUTION OF INTERPOLAR MAGNETS |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5270605A (en) * | 1991-05-21 | 1993-12-14 | Valeo Equipements Electriques Moteur | Three-phase alternator for a motor vehicle |
JPH09215288A (en) * | 1996-02-09 | 1997-08-15 | Denso Corp | Ac generator |
CN1485965A (en) * | 2002-09-27 | 2004-03-31 | 三菱电机株式会社 | AC generator for vehicle |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8629597B2 (en) * | 2010-03-03 | 2014-01-14 | Remy Technologies, Llc | Airflow passage arrangement for claw-pole electric machines |
DE102010064377A1 (en) * | 2010-12-30 | 2012-07-05 | Robert Bosch Gmbh | Electric machine e.g. three-phase generator, for motor car, has sectional plane intersecting claw pole finger to axis of rotor, where sectional plane is removed from circuit board by utilizing characteristic of machine with certain ratio |
US9577501B2 (en) * | 2013-04-05 | 2017-02-21 | Remy Technologies, Llc | Claw pole rotor with cavity for minimizing flux leakage |
-
2015
- 2015-12-01 FR FR1561632A patent/FR3044483B1/en not_active Expired - Fee Related
-
2016
- 2016-11-23 WO PCT/FR2016/053060 patent/WO2017093636A1/en active Application Filing
- 2016-11-23 CN CN201680070367.8A patent/CN108370182A/en active Pending
- 2016-11-23 DE DE112016005481.5T patent/DE112016005481T5/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5270605A (en) * | 1991-05-21 | 1993-12-14 | Valeo Equipements Electriques Moteur | Three-phase alternator for a motor vehicle |
JPH09215288A (en) * | 1996-02-09 | 1997-08-15 | Denso Corp | Ac generator |
CN1485965A (en) * | 2002-09-27 | 2004-03-31 | 三菱电机株式会社 | AC generator for vehicle |
Also Published As
Publication number | Publication date |
---|---|
FR3044483B1 (en) | 2018-11-23 |
DE112016005481T5 (en) | 2018-09-06 |
FR3044483A1 (en) | 2017-06-02 |
WO2017093636A1 (en) | 2017-06-08 |
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PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180803 |