JPH062A - Non-tilled direct seeder - Google Patents
Non-tilled direct seederInfo
- Publication number
- JPH062A JPH062A JP4183051A JP18305192A JPH062A JP H062 A JPH062 A JP H062A JP 4183051 A JP4183051 A JP 4183051A JP 18305192 A JP18305192 A JP 18305192A JP H062 A JPH062 A JP H062A
- Authority
- JP
- Japan
- Prior art keywords
- seeding
- scraper
- groove
- grooving
- tilled
- 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.)
- Granted
Links
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
Landscapes
- Soil Working Implements (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、不耕起圃場に播種溝を
作溝し、この播種溝を仕上げ処理した直後に播種する不
耕起直播機に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a no-till direct sowing machine in which a sowing groove is formed in a no-till field and seeding is performed immediately after finishing the sowing groove.
【0002】[0002]
【従来の技術】従来、圃場全面をロータリー耕耘するこ
とにより砕土した後、稲の種籾を圃場に直播する方法は
既に知られている。また、不耕起圃場面に播種し、その
側部を耕起して跳ね上げた耕土を播種した種子上に覆土
する不耕起播種機も既に知られている。2. Description of the Related Art Conventionally, a method has been already known in which the entire surface of a field is cultivated by rotary tilling, and then seed rice is directly sown in the field. In addition, a non-tillage sowing machine is also known in which seeds are sown in a no-tillage field, and the side portions thereof are plowed and flipped up to cover the seeds on which the cultivated soil is sown.
【0003】[0003]
【発明が解決しようとする課題】前記既知の播種方法は
圃場全体を耕起して砕土するので、播種の準備に多大の
労力と時間を要し、その上、播種作業を要するため省力
化が困難であった。このような課題を解決すべく作溝爪
を逆回転させて前部でアッパーカットにより耕起した耕
土を上方から後方へ投擲して播種溝に播種した種子に覆
土しようとすると、播種溝に上記耕土が投入されて播種
深さが変動し、適正な播種及び育成を行うことができな
かった。また、不耕起圃場面に直接播種して側部の圃場
を耕起して覆土する方式は、播種した部分に雑草が繁茂
し易く、しかも、圃場面に凹凸が多くかつ覆土厚が変動
するので、覆土厚が薄い部分では発芽不良を起すると共
に鳥害を受け易く、厚い部分では発芽遅れや成育障害を
起す等の問題点があった。The known seeding method described above requires plentiful labor and time for the preparation of seeding because it cultivates the entire field and crushes the soil. Moreover, the seeding work requires labor saving. It was difficult. In order to solve such a problem, when trying to cover the seeds sown in the sowing groove by throwing the cultivated soil cultivated by the upper cut in the front part in the front part from the upper side to the rear so as to solve such a problem, Since the cultivated soil was added and the sowing depth fluctuated, proper sowing and growth could not be performed. In addition, the method of sowing directly in a no-tillage field scene and plowing the field on the side to cover the soil is easy for weeds to grow in the seeded area, and moreover there are many irregularities in the field scene and the cover soil thickness varies. Therefore, there were problems such as poor germination in the portion where the soil cover thickness was thin and bird damage was easily caused, and delayed germination and stunting in the thick portion.
【0004】[0004]
【課題を解決するための手段】本発明は、前側で上昇回
転する耕耘軸に略同一軌跡で回転する複数の作溝爪を装
着し、それらの作溝爪の回転軌跡の後部に、作溝爪によ
り形成された播種溝の底面を仕上げるスクレーパーを設
け、該スクレーパーの直後に播種用の導管を臨ませるこ
とにより前述の課題を解決した。SUMMARY OF THE INVENTION According to the present invention, a plurality of grooving claws that rotate on substantially the same locus are mounted on a tilling shaft that rises and rotates on the front side. The above-mentioned problem was solved by providing a scraper for finishing the bottom surface of the seeding groove formed by the claw, and allowing the seeding conduit to face immediately after the scraper.
【0005】[0005]
【作用】不耕起圃場にて、耕耘軸を逆回転(前側で上昇
回動)させながら播種機を走行させると、作溝爪は不耕
起圃場に播種溝をアッパーカットにより形成すると共に
耕起した耕土を上方を経て後方へ投擲し、スクレーパー
は投擲されて播種溝に堆積した耕土を掬い出し、播種装
置はスクレーパーにより溝浚した直後の播種溝に播種
し、その後方へ投擲された耕土は溝底に播種された種子
上に覆土される。[Function] In a no-till field, when the seeder is run while rotating the tiller shaft in the reverse direction (rotating upward on the front side), the grooving claws form a sowing groove in the no-till field by uppercutting and plowing. The raised cultivated soil is thrown backward through the upper part, the scraper scoops out the cultivated soil accumulated in the seeding ditch, and the seeding device sows the seedling ditch immediately after dredging by the scraper, and the cultivated soil thrown behind it. Is covered with soil on the seeds sown at the bottom of the ditch.
【0006】[0006]
【実施例】本発明の一実施例を図面に示す播種機につい
て説明すると、ティラー1は従来のものと同様、下部に
車輪2を有するミッションケースに機台3を取付け、該
機台3上にエンジン4を搭載し、後部にヒッチ金具5を
取付け、上部にはハンドル6を有している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A seeder according to an embodiment of the present invention will be described. Like the conventional tiller, the tiller 1 has a machine case 3 attached to a mission case having wheels 2 at the bottom, and the machine case 3 is mounted on the machine case 3. The engine 4 is mounted, the hitch metal fitting 5 is attached to the rear portion, and the handle 6 is provided on the upper portion.
【0007】作溝装置7は中央のチェーンケース8の下
部に耕耘軸9をベアリングを介して支承し、上部の入力
プーリー10を前記ミッションケースの上部の出力プー
リー11にベルト12により連動連結し、前記耕耘軸9
の両端部に横移動調節可能(播種条間調節)に取付けた
ボスから放射状に突出した取付金13・・には、それぞ
れ複数のなた爪からなる作溝爪14・・を、側面視で図
1に示すごとく接地側において後方へ湾曲し、前後方向
から見ると相隣るものの先端部が交互に左右へ湾曲して
突出するように取付けてあり、支持フレーム7aの前端
は前記ヒッチ金5に連結ピンにより着脱可能に連結して
ある。The grooving device 7 supports a cultivating shaft 9 through a bearing on a lower part of a central chain case 8, and connects an upper input pulley 10 to an upper output pulley 11 of the transmission case by a belt 12. The cultivating shaft 9
At the side view, there are grooving claws 14 made up of a plurality of flat claws on the mounting studs 13 that radially protrude from the bosses that are laterally adjustable at both ends of the As shown in FIG. 1, it is mounted so that the front end of the support frame 7a is curved rearward on the ground contact side and adjacent to each other when viewed from the front and rear direction, and the front end of the support frame 7a is protruded alternately. It is detachably connected with a connecting pin.
【0008】前記支持フレーム7aの後部から両側方へ
延出した横フレームには、断面が下向きコ字状をなして
いて、側面視では前記耕耘軸9を跨ぐと共に前部と後部
が圃場面に接近したロータリカバー15を取付け、この
ロータリカバー15の両側板は図2に示す如く前記作溝
爪14・・の先端の回動軌跡の両側に近接して沿うよう
に間隔を狭く(例えば8cm程度)し、周面板の中間部
から前方部分は上記回転軌跡に沿っているが、後部は後
方へ膨出しており、上記ロータリカバー15の両側面に
固定したブラケット16に安定橇17を上下調節可能に
螺着して作溝爪14・・により形成される播種溝Aの深
さを調節するようになっている。The lateral frame extending from the rear part of the support frame 7a to both sides has a downwardly U-shaped cross section, and when viewed from the side, it straddles the cultivating shaft 9 and the front part and the rear part are in the field scene. Attaching the rotary cover 15 close to each other, the both side plates of the rotary cover 15 have a narrow interval (for example, about 8 cm) so as to closely follow both sides of the rotation locus of the tip of the grooving claws 14 as shown in FIG. ), The front part from the middle part of the peripheral plate is along the above-mentioned rotation locus, but the rear part bulges rearward, and the stable sled 17 can be vertically adjusted to the brackets 16 fixed to both side surfaces of the rotary cover 15. The depth of the seeding groove A formed by being screwed on the groove 14 is adjusted.
【0009】また、前記ロータリカバー15の一方の側
板の後部下端には、他方の側板に向けて下降傾斜したレ
ーキ18を播種溝A上に臨むように装着してあり、該レ
ーキ18は支持杆19から多数の篩杆20・・を櫛歯状
に突設すると共に前記作溝爪14・・により投擲される
耕土の投擲方向に向け傾斜させることにより構成されて
おり、上記支持杆19の両端に固定した調節板19aは
中間部を支点軸21により側板の後面に軸支し、上部の
長孔22をボルト23で横傾動調節可能に螺着してある
のでレーキ18の傾斜角を調節することができる。Further, a rake 18 inclined downward toward the other side plate of the rotary cover 15 is attached to the lower rear end of one side plate so as to face the seeding groove A, and the rake 18 is supported. 19 are provided with a large number of sieve rods 20 ... Protruding like comb teeth, and are inclined toward the throwing direction of the cultivated soil thrown by the grooving claws 14 ... The adjusting plate 19a fixed to the center of the rake 18 is rotatably supported by the fulcrum shaft 21 on the rear surface of the side plate, and the upper long hole 22 is screwed by the bolt 23 so that the tilting of the rake 18 can be adjusted. be able to.
【0010】そして、ロータリカバー15の後部下端の
前部寄りには、下端が逆V字状をなすスクレーパー24
を取付けてあり、このスクレーパー24は犂のように後
傾姿勢になっていて作溝爪14・・の回転軌跡の後面に
近接して沿っているので、作溝爪14・・により上方を
経て後方へ投擲された耕土はスクレーパー24により受
け止められ、少なくともその直後部分に耕土が堆積する
ことがなく、スクレーパー24により成型された逆V字
状の溝底面は部分的に露出した状態になる。A scraper 24 having an inverted V-shaped lower end is provided near the front end of the rear lower end of the rotary cover 15.
Since the scraper 24 is in a rearwardly inclined posture like a plow and is close to the rear surface of the locus of rotation of the grooving claws 14 ,. The cultivated soil thrown rearward is received by the scraper 24, and the cultivated soil is not deposited at least immediately after that, and the reverse V-shaped groove bottom formed by the scraper 24 is partially exposed.
【0011】播種施肥装置25は前記支持フレームの両
側部に装着した左右一対の種子用及び肥料用のホッパー
26,26と、その下部の繰出口に臨ませた繰出ロール
27と、各ホッパーの繰出口の左右からそれぞれ2本づ
つ連結した導管28・・とにより構成され、これらの導
管28・・は種子用と肥料用とを1本づつ組にしてそれ
らの下端部を前記スクレーパー24の直後の側部から播
種溝上に臨ませてある。但し、各ホッパー26,26を
仕切板で仕切って種籾と肥料を分けて入れるようにした
場合は各播種溝Aに対する種子用と肥料用の導管28,
28を交叉させることなくそのまま下降させることがで
きる。また、前記繰出ロール27の軸に取付けたスプロ
ケット30はロータリカバー15の後部外側に軸支した
突起付き駆動輪31の軸に取付けたスプロケット32に
チェーン33により連動連繋してある。The seeding and fertilizing apparatus 25 comprises a pair of left and right hoppers 26 and 26 for seeds and fertilizers mounted on both sides of the support frame, a feeding roll 27 facing a feeding outlet at a lower portion thereof, and a feeding roll of each hopper. It is composed of two conduits 28, ... Connected from the left and right of the outlet respectively, and these conduits 28..1 are set as one set for seeds and one for fertilizers, and their lower ends are provided immediately after the scraper 24. The seed groove is exposed from the side. However, when the hoppers 26, 26 are partitioned by a partition plate and the seed paddy and the fertilizer are separately stored, the conduits 28 for seeds and fertilizers for each seeding groove A,
28 can be lowered as it is without being crossed. The sprocket 30 mounted on the shaft of the pay-out roll 27 is linked by a chain 33 to a sprocket 32 mounted on the shaft of a drive wheel 31 with a protrusion that is rotatably supported on the outer rear side of the rotary cover 15.
【0012】次に作用について説明する。不耕起圃場に
て、ホッパー26、26に、浸種済の種籾に酸素発生剤
(カルパー)をコーティングしたものと、遅効性になる
よう難溶剤をコーティングした粒状肥料とを分けて入
れ、耕耘軸9を作溝爪14が前部で上昇回動するように
逆転駆動しながら機体を前進させると、作溝爪14は前
部で掻き上げながら狭い幅(例えば3〜5cm)の播種
溝を3cm内外の深さ掘削し、掻き上げられた耕土はロ
ータリカバー15に案内されながら上方を経て後方へ投
擲され、スクレーパー24は作溝爪14の回転軌跡から
1〜2cm離れた位置で溝内に侵入した状態で進行する
ことにより播種溝A内に侵入して堆積せんとする耕土を
掬い出してその底面を逆V字状に成型する。Next, the operation will be described. In a non-tillage field, the hoppers 26, 26 are divided into the seeds that have been soaked and coated with an oxygen generating agent (calper), and the granular fertilizer that is coated with a difficult solvent to have a slow-acting effect. When the machine body is moved forward while driving the grooving claws 9 in the reverse direction so that the grooving claws 14 rotate upward in the front part, the grooving claws 14 scrape the front part at the front while the seeding groove having a narrow width (for example, 3 to 5 cm) is 3 cm. The cultivated soil that has been excavated to the inside and outside depths and guided up by the rotary cover 15 is thrown backward through the upward direction, and the scraper 24 enters the groove at a position 1 to 2 cm away from the rotation track of the grooving claw 14. By advancing in the state described above, the cultivated soil that enters the seeding groove A and becomes a pile is scooped out, and the bottom surface thereof is formed into an inverted V shape.
【0013】駆動輪31は接地して回転するので、それ
に連動する繰出ロール27は、ホッパー26に収納され
ている種籾及び肥料を順次繰り出し、それらが導管2
8,28内を通って播種溝底の左右の窪みに別々に投入
され、前述の後方へ投擲された耕土はレーキ18に衝突
して更に砕土されると共に篩選別され、細かい耕土が漏
下して種籾及び粒状肥料に覆土され、大径の耕土、藁又
は雑草等は、レーキ18上を滑落して溝の側方の田面上
に向け篩杆20・・に沿って斜め後方へ流下する。その
際、篩杆20・・は後方へ傾斜しているのでレーキ18
上に堆積せんとする大径の土塊、雑草等を投擲された耕
土が押し流す。また覆土は粒径が1cm以下のものが8
0%以上含まれる状態で、厚さは0.5cmでは乾燥害
が発生し、2cm以上では酸欠で発芽不良になるので1
〜2cmにすることが望ましい。Since the drive wheel 31 rotates while being grounded, the feeding roll 27 interlocked with it drives the seed paddy and fertilizer stored in the hopper 26 in order, and these feed them.
The cultivated soil, which has been separately thrown into the right and left depressions on the bottom of the sowing groove through 8 and 28, collides with the rake 18 and is further crushed and sieved, so that fine cultivated soil leaks. Covered with seed paddy and granular fertilizer, large diameter cultivated soil, straw, weeds, etc. slide down on the rake 18 and flow diagonally backward along the sieve rod 20 ... toward the rice field on the side of the groove. At that time, since the sieve rods 20 ...
The arable soil that has been thrown up with large-sized soil masses and weeds that accumulate on top is washed away. Also, the soil cover is 8 if the particle size is 1 cm or less.
If the content is 0% or more and the thickness is 0.5 cm, drying damage will occur, and if it is 2 cm or more, germination will be poor due to oxygen deficiency.
It is desirable to set it to ˜2 cm.
【0014】スクレーパー24の背面に仕切板24aを
突設して導管28,28の下部を仕切板24aの左右に
振り分けておくと種籾と粒状肥料とを更に明確に分離し
て投入することができ、また、種子用の導管28と肥料
用の導管28の下端の高さを上下にずらしておいても、
種籾と肥料の分離を良くすることができ、いずれにして
も種籾と粒状肥料との間隔は2〜3cmにすることが望
ましい。そして、播種してから7〜10日間経過して発
芽した頃を見計らって圃場に給水すると成育が良くな
る。By partitioning the partition plate 24a on the rear surface of the scraper 24 and arranging the lower portions of the conduits 28, 28 to the left and right of the partition plate 24a, the seed paddy and the granular fertilizer can be more clearly separated and charged. Moreover, even if the heights of the lower ends of the conduit 28 for seeds and the conduit 28 for fertilizer are vertically shifted,
Separation of seed paddy and fertilizer can be improved, and in any case, it is desirable that the distance between seed paddy and granular fertilizer is 2-3 cm. Then, the growth is improved by supplying water to the field at a time when germination occurs 7 to 10 days after sowing.
【0015】図5はレーキ18の他の実施例を示すもの
で、篩杆20・・の基部を支持杆19にそれぞれ前後揺
動可能に連結し、各篩杆20・・の基部寄りを連杆35
に回動自在に連結し、該連杆35の一端を前後傾動可能
な調節レバー36に連結したもので、該調節レバー36
を前後に傾動操作すると、篩杆20の間隔、つまり目合
いを拡縮調節することができる。FIG. 5 shows another embodiment of the rake 18, in which the bases of the sieve rods 20 ... Are connected to the support rods 19 so that they can be rocked back and forth, and the bases of the sieve rods 20. Rod 35
Is connected to an adjusting lever 36 that can be tilted back and forth.
When the tilting operation is performed back and forth, the interval between the screen rods 20, that is, the mesh size can be expanded or contracted.
【0016】図6及び図7はそれぞれレーキ18の別の
実施例を示すもので、この例は固定篩杆20aと可動篩
杆20bとを交互に組み合わせ、可動篩杆20b・・の
基部を支持杆19に固定し、該支持杆19の前端を前記
耕耘軸9と一体な偏芯輪37に遊嵌されているリング3
8に連杆39を介して連動連結したもので、耕耘軸9が
回動すると可動篩杆20b・・が前後に往復動するの
で、砕土作用及び篩選別作用が更に向上する。6 and 7 respectively show another embodiment of the rake 18. In this example, the fixed sieve 20a and the movable sieve 20b are alternately combined to support the base of the movable sieve 20b. A ring 3 fixed to a rod 19 and having a front end of the support rod 19 loosely fitted to an eccentric ring 37 integrated with the tiller shaft 9.
8 is interlocked with each other via a connecting rod 39, and when the tilling shaft 9 rotates, the movable sieve rods 20b ... Reciprocate back and forth, so that the crushing action and the sieve selecting action are further improved.
【0017】[0017]
【発明の効果】本発明は、前述のように前側で上昇回転
する耕耘軸9に略同一軌跡で回転する複数の作溝爪14
を装着し、それらの作溝爪14の回転軌跡の後部に、作
溝爪14により形成された播種溝Aの底面を仕上げるス
クレーパー24を設け、該スクレーパー24の直後に播
種用の導管28を臨ませたので、不耕起直播作業を省力
化することができ、しかも、作溝爪14・・により後方
へ投擲される耕土が播種溝内に侵入せんとするが、スク
レーパー24が播種溝Aを浚った直後に播種することが
可能になり、それにより播種深さ及び覆土厚を略一定に
して発芽不良及び成育障害が発生するのを確実に防止す
ることができる。As described above, according to the present invention, a plurality of grooving claws 14 that rotate on substantially the same locus on the tilling shaft 9 that rotates upward on the front side as described above.
And a scraper 24 for finishing the bottom surface of the seeding groove A formed by the grooving claws 14 is provided at the rear of the rotation loci of the grooving claws 14, and a seeding conduit 28 is provided immediately after the scraper 24. Since there is no need, the non-till direct sowing work can be saved, and moreover, the cultivated soil thrown backward by the grooving claws 14 does not enter the sowing groove, but the scraper 24 makes the sowing groove A It is possible to sow immediately after dredging, whereby the sowing depth and soil cover thickness can be made substantially constant, and it is possible to reliably prevent poor germination and growth failure.
【図1】播種施肥機の一部を破断した側面図である。FIG. 1 is a side view in which a part of a seeding fertilizer applicator is cut away.
【図2】作溝部の横断面図である。FIG. 2 is a cross-sectional view of a groove forming portion.
【図3】作溝状態を示す横断面図である。FIG. 3 is a cross-sectional view showing a groove-making state.
【図4】播種施肥状態を示す横断面図である。FIG. 4 is a transverse cross-sectional view showing a seeded and fertilized state.
【図5】レーキの斜視図である。FIG. 5 is a perspective view of a rake.
【図6】揺動方式レーキの斜視図である。FIG. 6 is a perspective view of a swing rake.
【図7】同上他例の平面図である。FIG. 7 is a plan view of another example of the above.
7 作溝装置 8 チェンケース 14 作溝爪 17 安定橇 18 レーキ 20 篩杆 24 スクレーパー 25 播種施肥装置 28 導管 7 Grooving device 8 Chain case 14 Grooving claw 17 Stabilizing sled 18 Rake 20 Screening rod 24 Scraper 25 Seeding and fertilizing device 28 Conduit
Claims (1)
跡で回転する複数の作溝爪14を装着し、それらの作溝
爪14の回転軌跡の後部に、作溝爪14により形成され
た播種溝Aの底面を仕上げるスクレーパー24を設け、
該スクレーパー24の直後に播種用の導管28を臨ませ
たことを特徴とする不耕起直播機。1. A plurality of grooving claws 14 that rotate on substantially the same locus are mounted on a tilling shaft 9 that rotates upward on the front side, and the grooving claws 14 are formed at the rear of the rotation loci of these grooving claws 14. The scraper 24 for finishing the bottom surface of the seeding groove A
A non-tillage direct sowing machine characterized in that a conduit 28 for sowing is faced immediately after the scraper 24.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4183051A JP2930476B2 (en) | 1992-06-17 | 1992-06-17 | No-till direct sowing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4183051A JP2930476B2 (en) | 1992-06-17 | 1992-06-17 | No-till direct sowing machine |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH062A true JPH062A (en) | 1994-01-11 |
JP2930476B2 JP2930476B2 (en) | 1999-08-03 |
Family
ID=16128883
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4183051A Expired - Fee Related JP2930476B2 (en) | 1992-06-17 | 1992-06-17 | No-till direct sowing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2930476B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5110202A (en) * | 1974-07-12 | 1976-01-27 | Kawasaki Heavy Ind Ltd | DOKURITSUKANETSUKI |
US6310019B1 (en) * | 2000-07-05 | 2001-10-30 | Wako Pure Chemical Industries, Ltd. | Cleaning agent for a semi-conductor substrate |
KR100981652B1 (en) * | 2008-04-07 | 2010-09-13 | 오철균 | Multipurpose farm machine |
-
1992
- 1992-06-17 JP JP4183051A patent/JP2930476B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5110202A (en) * | 1974-07-12 | 1976-01-27 | Kawasaki Heavy Ind Ltd | DOKURITSUKANETSUKI |
JPS5435601B2 (en) * | 1974-07-12 | 1979-11-05 | ||
US6310019B1 (en) * | 2000-07-05 | 2001-10-30 | Wako Pure Chemical Industries, Ltd. | Cleaning agent for a semi-conductor substrate |
KR100981652B1 (en) * | 2008-04-07 | 2010-09-13 | 오철균 | Multipurpose farm machine |
Also Published As
Publication number | Publication date |
---|---|
JP2930476B2 (en) | 1999-08-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |