CN111105684A - Electronic remote control doorbell teaching aid for children intelligence development - Google Patents
Electronic remote control doorbell teaching aid for children intelligence development Download PDFInfo
- Publication number
- CN111105684A CN111105684A CN202010025456.9A CN202010025456A CN111105684A CN 111105684 A CN111105684 A CN 111105684A CN 202010025456 A CN202010025456 A CN 202010025456A CN 111105684 A CN111105684 A CN 111105684A
- Authority
- CN
- China
- Prior art keywords
- pcb
- plate
- bottom plate
- nylon column
- long side
- 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
- 238000011161 development Methods 0.000 title description 2
- 239000004677 Nylon Substances 0.000 claims abstract description 23
- 229920001778 nylon Polymers 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000000919 ceramic Substances 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 12
- 239000013078 crystal Substances 0.000 claims description 9
- 238000003466 welding Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 235000014676 Phragmites communis Nutrition 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- KLARSDUHONHPRF-UHFFFAOYSA-N [Li].[Mn] Chemical compound [Li].[Mn] KLARSDUHONHPRF-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 abstract description 2
- 238000012549 training Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Algebra (AREA)
- Pure & Applied Mathematics (AREA)
- Educational Administration (AREA)
- Computational Mathematics (AREA)
- Business, Economics & Management (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Selective Calling Equipment (AREA)
Abstract
The invention discloses an electronic remote control doorbell educational teaching aid for children, which is characterized in that a PCB is provided with 4 connecting round holes, the PCB passes through 8 nylon columns, the front side of the PCB is provided with a nylon column with a diameter of 3MM and a length of 18MM, the nylon column with a screw with a length of 6MM at the top end passes through the 4 round holes at the edge of the PCB and is connected with a nylon column with a diameter of 3MM at the back side, a circuit board is fixed in the middle, the back side of the PCB is connected with a nylon column with a length of 24MM through a connecting bottom plate with a diameter of 3MM, the tail end of the nylon column with a length of 18MM is connected and fastened with the nylon column screw of a top plate 3MM, the bottom plate is provided with interface grooves with specific shapes, the long side plate and the short side plate are respectively provided with 2 blocks, the long side plate and the short side plate are directly clamped into corresponding interface grooves on the bottom plate through corresponding convex parts, the top plate is, the roof is directly gone into the bulge that long curb plate and short curb plate correspond through the interface recess that corresponds, and bottom plate, curb plate and roof are the green transparent ya keli material of thickness 3MM fluorescence, and the beneficial effect is that the design principle is novel, and the structure is unique, and the debugging of being convenient for, and the teaching is in happy, has very wide commercial prospect, can fill correlation technique blank, can produce great social and economic benefits again.
Description
Technical Field
The invention relates to the field of electronic teaching aids, in particular to an electronic remote control doorbell intelligence-developing teaching aid for children.
Background
The evaluation method is different from the evaluation method of quantifying children by scores in the traditional teaching by relying on various electronic teaching aids, developing creativity and creating a brainstorming storm as the teaching aim, introducing innovation in thinking, developing the abilities of the children by creating an education idea in action and adopting a teaching mode of playing middle school, learning middle school and thinking.
At present, the intelligence-developing electronic teaching aid has the advantages of single function, less types and high packaging degree, electronic devices are welded on a circuit board, and students cannot manually plug and pull for debugging, but the flexibility is high and the modular electronic teaching aid can be plugged and pulled.
In order to solve the technical bottlenecks of relatively backward design level, difficult debugging, poor training effect and the like of the electronic teaching aid in the prior art, the invention discloses a children intelligence-developing teaching aid of an electronic remote control doorbell, which has the advantages of low cost, novel scheme, unique configuration, novel principle, high flexibility, short debugging time, capability of repeatedly assembling electronic devices on site, meeting the actual requirements of children intelligence-developing training, filling the blank of related technologies and generating greater social benefits and economic benefits.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the electronic remote control doorbell intelligence-developing teaching aid for children, which is unique in principle, breaks through the conventional technical scheme, is novel in concept, simple in assembly and good in training effect, is flexibly designed, and can realize debugging, plugging and unplugging of components and elements of students on the training site and enhance the teaching effect.
A children intelligence-developing teaching aid with an electronic remote control doorbell is characterized in that 4 connecting round holes are formed in a PCB, the PCB is connected with a back diameter 3MM through 8 nylon columns, the front side of the PCB is provided with a nylon column with a diameter of 3MM, a long side of 18MM and a long side of 6MM screw penetrate through the 4 round holes in the edge of the PCB, the long side of 24MM is connected with the nylon column with a double nut thread, the circuit board is fixed in the middle, a back double-pass long 24MM nylon column connecting bottom plate is connected with a diameter 3MM machine thread screw, the tail end of the long side of 18MM nylon column is connected and fastened with a top plate 3MM machine thread screw, interface grooves with specific shapes are formed in the bottom plate, 2 long side plates and 2 short side plates are respectively, the long side plates and the short side plates are directly clamped into corresponding interface grooves in the bottom plate through corresponding convex parts, the top plate is provided with interface grooves with specific shapes, the top plate is directly clamped into the, the bottom plate, the side plates and the top plate are all made of fluorescent green transparent acrylic materials with the thickness of 3 MM.
The corresponding position that needs to set up electronic component on the PCB board is provided with female seat of round hole buckle welding in advance, and the inside buckle of the female seat jack of welding adopts the reed form, and electronic component need not fixed welding on the PCB board, and the detachable disect insertion of electronic component welds in the round hole of female seat.
The front surface of the PCB is provided with a toggle switch S1, a Schottky diode F1 is arranged on the left of the toggle switch S1, a data downloading interface is arranged above the toggle switch S1, a power indicator lamp D1 is arranged on the front surface of the PCB, a signal connector LS1 is arranged on the left of the power indicator lamp D1, a single chip microcomputer U1 is arranged in the middle of the front surface of the PCB, 2 ceramic chip capacitors C1, C2 and 1 crystal oscillator Y1 are arranged below the single chip microcomputer U1, 2 triodes Q1 and Q2 are arranged on the right of the single chip microcomputer U1, an infrared receiving head is arranged on the front surface of the PCB, a ceramic chip capacitor Q3 is arranged on the right of the infrared receiving head, a power connector BT1 is arranged on the front surface of the PCB, 6 resistors R1-R6 are arranged below the power connector BT1, and key switches S1 and S2 are arranged on the.
A loudspeaker is arranged in the middle in front of the PCB.
The central position of the back surface of the PCB is provided with a battery box.
The remote controller is a singlechip 51 infrared remote controller.
The size of the PCB is 80MM long and 60MM wide, FR-4 black oil white character, lead-free tin spraying, oil covering through holes, 1.6MM thick plate, one ounce copper thick plate, the toggle switch S1 is SS-12F23 single-row bent pin two-gear side face/sliding type toggle switch, the Schottky diode F1 is a direct-insert type 1N5819 rectifier diode, the data download interface is an XH2.54-4AW bent pin 4P download interface, the power indicator lamp is a 5MM red direct-insert light emitting diode, the signal connector LS1 is an XH2.54-2AW 2P bent pin connector, the singlechip U1 is an STC89C52 ceramic tile RC-40I-LQFP44 patch single chip microcomputer, 2 ceramic tiles C1 and C2 are the same model number of an XH 2.1 NF 100V direct-insert capacitor, the crystal oscillator Y1 is a 12M direct-insert crystal oscillator, 2Q 1 and Q53962 are the same SOT 80S 0038 infrared receiving triode head and are integrated passive infrared receiving heads 6858, ceramic chip capacitor Q3 is 1040.1UF 100NF50V straight-inserted ceramic chip capacitor, power connector BT1 is KF2510/2P bent-pin connector, resistor R1 is 5 color ring 1/4W straight-inserted 1K ohm resistor, resistors R2-R6 are 5 color ring 1/4W straight-inserted 10K ohm resistors of the same model, key switches S1 and S2 are 6MM 20MM soft-touch key switches of the same model, the loudspeaker is 40MM 0.5W8 ohm loudspeaker, and the battery box is 3-section No. 5 battery box.
The remote controller is 86MM 40MM 6.0MM, the remote control range is 8-10 m, the 3V button lithium manganese battery and the infrared carrier frequency of 38 KHz.
The single chip microcomputer is an STC89C52RC-40I-LQFP44G patch single chip microcomputer, the CMOS8 bit microcontroller with an 8K byte system programmable Flash memory, low power consumption and high performance is provided, a compiled program is burnt into the single chip microcomputer, after an infrared remote controller key is pressed to send a signal, an infrared receiving head receives an instruction at a specified distance, the single chip microcomputer executes a corresponding command, and a played song is transmitted through a loudspeaker.
Compared with the prior art, the invention has the following beneficial effects: the electronic component has the advantages of novel principle, unique configuration, short debugging time, high flexibility, repeated disassembly of the electronic component and very wide commercial prospect, and can fill up the blank of the related technology and generate great social and economic benefits.
Drawings
Fig. 1 is a front side (main body structure) of a children intelligence-developing teaching aid with an electronic remote control doorbell.
Fig. 2 is the back (main structure) of a children intelligence-developing teaching aid with an electronic remote control doorbell.
Fig. 3 is a children intelligence-developing teaching aid (without top plate) with an electronic remote control doorbell.
Fig. 4 is a children intelligence-developing teaching aid (comprising a top plate) with an electronic remote control doorbell.
In FIGS. 1-4:
1. a base plate; 2. Nylon column 3 x 24MM bi-pass; 3. A PCB board;
4. a resistance; 5. Crystal oscillation; 6. A key switch;
7. a toggle switch; 8. A Schottky diode; 9. A triode;
10. a data download interface; 11. A power indicator light; 12. A signal connector;
13. a ceramic chip capacitor; 14. A speaker; 15. An infrared receiving head;
16. a single chip microcomputer; 17. A power supply connector; 18. Short side plates;
19. a battery case; 20. Nylon column 3 × 18+6 MM; 21. A long side plate;
22. machine thread screw M3 × 6 MM; 23. A top plate.
Detailed Description
Embodiments of the present invention will be described with reference to the accompanying drawings, and the present invention will be described in detail below with reference to fig. 1 to 4. An electronic remote control doorbell child intelligence-developing teaching aid comprises a bottom plate 1, a nylon column 3X 24MM bi-pass 2, a PCB board 3, a resistor 4, a crystal oscillator 5, a key switch 6, a toggle switch 7, a Schottky diode 8, a three-level stem 9, a data downloading interface 10, a power indicator light 11, a signal connector 12, a ceramic chip capacitor 13, a loudspeaker 14, an infrared receiving head 15, a single chip microcomputer 16, a power connector 17, a short side plate 18, a battery box 19, a nylon column 3X 18+6MM 20, a long side plate 21, a machine tooth screw M3X 6MM 22 and a top plate 23.
Be provided with 4 on the PCB board 3 and connect the round hole, PCB board 3 is through 4 nylon posts 3X 24MM bi-pass 2 fixed connection on bottom plate 1, be provided with the interface recess of specific shape on the bottom plate 1, long side board 21 and short side board 18 are each 2, long side board 21 and short side board 18 are through the corresponding protruding part direct card income corresponding interface recess on the bottom plate 1, it fastens with roof 23 mutually through 4 nylon posts 3X 18+6MM 20 on the PCB board 3, be provided with the interface recess of specific shape on the roof 23, roof 23 is through the direct card income of the interface recess that corresponds of long side board 21 and short side board 18 bulge that corresponds, short side board, long side board, roof and bottom plate are the green transparent ya keli material of thickness 3 MM.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all modifications, alterations, and equivalents of the above embodiments according to the principles of the present invention are within the scope of the present invention.
Claims (1)
1. A children intelligence-developing teaching aid with an electronic remote control doorbell is characterized in that 4 connecting round holes are formed in a PCB, the PCB is connected with a back diameter 3MM through 8 nylon columns, the front side of the PCB is provided with a nylon column with a diameter of 3MM, a long side of 18MM and a long side of 6MM screw penetrate through the 4 round holes in the edge of the PCB, the long side of 24MM is connected with the nylon column with a double nut thread, the circuit board is fixed in the middle, a back double-pass long 24MM nylon column connecting bottom plate is connected with a diameter 3MM machine thread screw, the tail end of the long side of 18MM nylon column is connected and fastened with a top plate 3MM machine thread screw, interface grooves with specific shapes are formed in the bottom plate, 2 long side plates and 2 short side plates are respectively, the long side plates and the short side plates are directly clamped into corresponding interface grooves in the bottom plate through corresponding convex parts, the top plate is provided with interface grooves with specific shapes, the top plate is directly clamped into the, the bottom plate, the side plates and the top plate are all made of fluorescent green transparent acrylic materials with the thickness of 3 MM;
a circular hole buckle welding female seat is arranged in advance at a corresponding position on a PCB where an electronic element needs to be arranged, a buckle in an inserting hole of the welding female seat is in a reed form, the electronic element does not need to be fixedly welded on the PCB, and the electronic element can be detachably and directly inserted into a circular hole of the welding female seat;
a toggle switch S1 is arranged on the front surface of the PCB, a Schottky diode F1 is arranged on the left of the toggle switch S1, a data downloading interface is arranged above the toggle switch S1, a power indicator lamp D1 is arranged on the front surface of the PCB, a signal connector LS1 is arranged on the left of the power indicator lamp D1, a single chip microcomputer U1 is arranged in the middle of the front surface of the PCB, 2 ceramic chip capacitors C1, C2 and 1 crystal oscillator Y1 are arranged below the single chip microcomputer U1, 2 triodes Q1 and Q2 are arranged on the right of the single chip microcomputer U1, an infrared receiving head is arranged on the front surface of the PCB, a ceramic chip capacitor Q3 is arranged on the right of the infrared receiving head, a power connector BT1 is arranged on the front surface of the PCB, 6 resistors R1-R6 are arranged below the power connector BT1, and key switches S1 and S2 are arranged on the;
a loudspeaker is arranged in the middle in front of the PCB;
a battery box is arranged in the center of the back surface of the PCB;
the remote controller is a singlechip 51 infrared remote controller;
the size of the PCB is 80MM long and 60MM wide, FR-4 black oil white character, lead-free tin spraying, oil covering through holes, 1.6MM thick plate, one ounce copper thick plate, the toggle switch S1 is SS-12F23 single-row bent pin two-gear side face/sliding type toggle switch, the Schottky diode F1 is a direct-insert type 1N5819 rectifier diode, the data download interface is an XH2.54-4AW bent pin 4P download interface, the power indicator lamp is a 5MM red direct-insert light emitting diode, the signal connector LS1 is an XH2.54-2AW 2P bent pin connector, the singlechip U1 is an STC89C52 ceramic tile RC-40I-LQFP44 patch single chip microcomputer, 2 ceramic tiles C1 and C2 are the same model number of an XH 2.1 NF 100V direct-insert capacitor, the crystal oscillator Y1 is a 12M direct-insert crystal oscillator, 2Q 1 and Q53962 are the same SOT 80S 0038 infrared receiving triode head and are integrated passive infrared receiving heads 6858, ceramic chip capacitor Q3 is 1040.1UF 100NF50V straight-inserted ceramic chip capacitor, power connector BT1 is KF2510/2P bent-pin connector, resistor R1 is 5 color ring 1/4W straight-inserted 1K ohm resistor, resistors R2-R6 are 5 color ring 1/4W straight-inserted 10K ohm resistors of the same model, key switches S1 and S2 are 6MM 20MM soft-touch key switches of the same model, the loudspeaker is 40MM 0.5W8 ohm loudspeaker, and the battery box is 3-section No. 5 battery box;
the remote controller is 86MM 40MM 6.0MM, the remote control range is 8-10 m, the 3V button lithium manganese battery and the infrared carrier frequency of 38 KHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025456.9A CN111105684A (en) | 2020-01-09 | 2020-01-09 | Electronic remote control doorbell teaching aid for children intelligence development |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010025456.9A CN111105684A (en) | 2020-01-09 | 2020-01-09 | Electronic remote control doorbell teaching aid for children intelligence development |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111105684A true CN111105684A (en) | 2020-05-05 |
Family
ID=70427212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010025456.9A Pending CN111105684A (en) | 2020-01-09 | 2020-01-09 | Electronic remote control doorbell teaching aid for children intelligence development |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111105684A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202871166U (en) * | 2012-05-11 | 2013-04-10 | 上海市青浦区白鹤中学 | Multifunctional ding-dong door-bell demonstration plate |
| CN104809830A (en) * | 2015-05-13 | 2015-07-29 | 江苏天晟药业有限公司 | Wireless remote-control doorbell |
| CN107274610A (en) * | 2017-07-23 | 2017-10-20 | 苏州中蟹网电子商务有限公司 | A kind of wireless remote control doorbell |
| CN108877433A (en) * | 2018-06-29 | 2018-11-23 | 艾迪沃克国际教育科技（北京）有限公司 | A kind of electronic sound-controlled LED melody lamp children educational teaching aid |
| CN211375971U (en) * | 2020-01-09 | 2020-08-28 | 北京中诚博睿教育科技有限公司 | Electronic remote control doorbell teaching aid for children intelligence development |
-
2020
- 2020-01-09 CN CN202010025456.9A patent/CN111105684A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202871166U (en) * | 2012-05-11 | 2013-04-10 | 上海市青浦区白鹤中学 | Multifunctional ding-dong door-bell demonstration plate |
| CN104809830A (en) * | 2015-05-13 | 2015-07-29 | 江苏天晟药业有限公司 | Wireless remote-control doorbell |
| CN107274610A (en) * | 2017-07-23 | 2017-10-20 | 苏州中蟹网电子商务有限公司 | A kind of wireless remote control doorbell |
| CN108877433A (en) * | 2018-06-29 | 2018-11-23 | 艾迪沃克国际教育科技（北京）有限公司 | A kind of electronic sound-controlled LED melody lamp children educational teaching aid |
| CN211375971U (en) * | 2020-01-09 | 2020-08-28 | 北京中诚博睿教育科技有限公司 | Electronic remote control doorbell teaching aid for children intelligence development |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108877433A (en) | A kind of electronic sound-controlled LED melody lamp children educational teaching aid | |
| CN211375971U (en) | Electronic remote control doorbell teaching aid for children intelligence development | |
| CN201523102U (en) | Terminal and material belt thereof | |
| CN108806407A (en) | A kind of electronic digit guesses children educational teaching aid repeatedly | |
| CN211237460U (en) | Electronic hourglass children intelligence-developing teaching aid | |
| CN111105684A (en) | Electronic remote control doorbell teaching aid for children intelligence development | |
| CN211264512U (en) | Electronic recorder teaching aid for children intelligence development | |
| CN211375967U (en) | Electronic photoinduction alarm clock intelligence-developing teaching aid for children | |
| CN211375966U (en) | Children intelligence-developing teaching aid for electronic dot-matrix game machine | |
| CN211375969U (en) | Electronic traffic signal lamp intelligence-developing teaching aid for children | |
| CN211207730U (en) | Electronic music synthesizer intelligence-developing teaching aid for children | |
| CN211455037U (en) | Electronic ultrasonic range finder teaching aid for children intelligence development | |
| CN211375968U (en) | Children intelligence-developing teaching aid with electronic calculator | |
| CN211403816U (en) | Electronic frequency modulation radio teaching aid for children intelligence development | |
| CN211455036U (en) | Electronic automatic hand dryer teaching aid for children intelligence development | |
| CN213810551U (en) | LED music module capable of being randomly combined | |
| CN211237459U (en) | Electronic wireless power transmission teaching aid for children intelligence development | |
| CN211555269U (en) | Electronic welcome device intelligence-developing teaching aid for children | |
| CN211237458U (en) | Electronic temperature and humidity detector teaching aid for children intelligence development | |
| CN211237470U (en) | Electronic circuit exercise board teaching aid for children intelligence development | |
| CN111243403A (en) | Children intelligence-developing teaching aid for electronic dot-matrix game machine | |
| CN110910733A (en) | Electronic hourglass children intelligence-developing teaching aid | |
| CN208372480U (en) | A kind of electronic sound-controlled melody lamp amusement educational toy | |
| CN211237461U (en) | Electronic metal detector teaching aid for improving intelligence of children | |
| CN111192508A (en) | Electronic traffic signal lamp intelligence-developing teaching aid for children |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Dong Document name: Notice of First Examination Opinion |
|
| DD01 | Delivery of document by public notice |