JPH0452523B2 - - Google Patents

Info

Publication number
JPH0452523B2
JPH0452523B2 JP58109909A JP10990983A JPH0452523B2 JP H0452523 B2 JPH0452523 B2 JP H0452523B2 JP 58109909 A JP58109909 A JP 58109909A JP 10990983 A JP10990983 A JP 10990983A JP H0452523 B2 JPH0452523 B2 JP H0452523B2
Authority
JP
Japan
Prior art keywords
magnetic
head
generating means
magnetism generating
recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP58109909A
Other languages
Japanese (ja)
Other versions
JPS601613A (en
Inventor
Toshinobu Futagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to JP10990983A priority Critical patent/JPS601613A/en
Priority to US06/620,184 priority patent/US4626945A/en
Priority to CA000456696A priority patent/CA1223958A/en
Priority to MX201679A priority patent/MX157468A/en
Priority to EP84106875A priority patent/EP0129226B1/en
Priority to BR8402943A priority patent/BR8402943A/en
Priority to NO842404A priority patent/NO164685C/en
Priority to DE8484106875T priority patent/DE3464526D1/en
Priority to BE0/213157A priority patent/BE899932A/en
Priority to AT84106875T priority patent/ATE28107T1/en
Priority to AU29410/84A priority patent/AU564893B2/en
Priority to DK294184A priority patent/DK161921C/en
Priority to IT67617/84A priority patent/IT1196715B/en
Priority to CH2956/84A priority patent/CH665725A5/en
Priority to FR8409512A priority patent/FR2548422A1/en
Priority to KR1019840003413A priority patent/KR920001153B1/en
Publication of JPS601613A publication Critical patent/JPS601613A/en
Publication of JPH0452523B2 publication Critical patent/JPH0452523B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/49—Fixed mounting or arrangements, e.g. one head per track
    • G11B5/4969—Details for track selection or addressing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/127—Structure or manufacture of heads, e.g. inductive
    • G11B5/187—Structure or manufacture of the surface of the head in physical contact with, or immediately adjacent to the recording medium; Pole pieces; Gap features
    • G11B5/1871—Shaping or contouring of the transducing or guiding surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Magnetic Heads (AREA)

Description

【発明の詳細な説明】 本発明は磁気ヘツド、特に単一のヘツドに複数
の磁化手段を備えた磁気ヘツドに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a magnetic head, and more particularly to a magnetic head having a plurality of magnetizing means in a single head.

磁気テープやフロツピーデイスク等の磁化可能
媒体に対して記録を行なうには磁気ヘツドを使用
する。従来の磁気ヘツドは磁芯とこれに巻いたコ
イルとから成る単体で構成してある。近年、垂直
磁化方式等の開発やフロツピーデイスク等の発展
のため記録密度の高い磁気記録が要求されてい
る。例えば、一般のフロツピーデイスクにおいて
は記録トラツクの間隔は1/48インチ（約0.529mm）
と極めて小さい。従来の磁気ヘツドでフロツピー
デイスクに磁気記録を行なう場合は、リードスク
リユーによる送り装置により磁気ヘツドをデイス
ク半径方向へ動かして所望の記録トラツク上に磁
気ヘツドを位置決めしていた。しかし、リードス
クリユーによる製造上の誤差や磁気ヘツドの取付
け調整誤差及び極狭なトラツク間隔のため、記録
トラツクに対するヘツドの位置決めにおいていわ
ゆる「オフ・トラツク」現象が生じ易く精確な磁
気記録に問題があり、また磁気ヘツドのバウンド
現象が生じるという問題もあつた。 Magnetic heads are used to record on magnetizable media such as magnetic tape and floppy disks. A conventional magnetic head consists of a single magnetic core and a coil wound around the magnetic core. In recent years, magnetic recording with high recording density has been required due to the development of perpendicular magnetization systems and the development of floppy disks. For example, in a typical floppy disk, the recording track spacing is 1/48 inch (approximately 0.529 mm).
and extremely small. When performing magnetic recording on a floppy disk using a conventional magnetic head, the magnetic head is positioned on a desired recording track by moving the magnetic head in the radial direction of the disk using a feed device using a lead screw. However, due to manufacturing errors caused by the lead screw, installation adjustment errors of the magnetic head, and extremely narrow track spacing, the so-called "off-track" phenomenon tends to occur when positioning the head relative to the recording track, causing problems in accurate magnetic recording. There was also the problem that the magnetic head bounced.

本発明は上述の如き従来の諸欠点を排除した簡
単な構造の磁気ヘツドを提供することを目的とす
る。 SUMMARY OF THE INVENTION An object of the present invention is to provide a magnetic head with a simple structure that eliminates the various drawbacks of the prior art as described above.

本発明によれば、非磁性帯域と磁性帯域とを交
互に配置した周面を有するヘツド本体と、各磁性
帯域に接続した磁性材と、１以上の磁気発生手段
と、隣接する任意の１対の磁性材に磁気発生手段
を磁気的に接続する手段とを備えて成る磁気ヘツ
ドが提供される。 According to the present invention, a head body has a peripheral surface in which non-magnetic zones and magnetic zones are arranged alternately, a magnetic material connected to each magnetic zone, one or more magnetism generating means, and an arbitrary pair of adjacent magnetic zones. and means for magnetically connecting a magnetism generating means to a magnetic material.

図を用いて説明すると、本発明の磁気ヘツド１
０（第１図）は円柱状の非磁性本体１１を有し、
その外周面には所定の間隔で複数個の環状の磁性
体（磁性帯域）１２が配置してある。従つて、本
体１１の周面上には磁性帯域１２と非磁性帯域１
３とが交互に位置する。各磁性帯域１２には対応
する磁性材１４が接続してある。固定ヘツドの場
合は、磁性帯域１２に磁性材１４を固着すればよ
いし、回転ヘツドの場合は接触ブラシ等（図示せ
ず）により磁性帯域１２と磁性材１４とを接続す
るとよい。なお、磁性帯域と磁性材とを僅かなギ
ヤツプを伴なつて近接させてもよい。 To explain using figures, a magnetic head 1 of the present invention
0 (FIG. 1) has a cylindrical non-magnetic body 11,
A plurality of annular magnetic bodies (magnetic bands) 12 are arranged on the outer peripheral surface at predetermined intervals. Therefore, there are a magnetic zone 12 and a non-magnetic zone 1 on the circumferential surface of the main body 11.
3 are located alternately. A corresponding magnetic material 14 is connected to each magnetic band 12. In the case of a fixed head, the magnetic material 14 may be fixed to the magnetic band 12, and in the case of a rotating head, the magnetic band 12 and the magnetic material 14 may be connected by a contact brush or the like (not shown). Note that the magnetic band and the magnetic material may be placed close to each other with a slight gap.

各磁性材１４は、既知のスイツチング回路１５
により、磁気発生手段１６に磁気的に接続してあ
る。磁気発生手段１６は磁芯１７とこれに巻いて
あり電流源１８に接続したコイル１９とから成る
既知の型式のものでよい。スイツチング回路１５
は磁芯１７の磁極端子２１，２２を任意の隣接す
る一対の磁性材１４に磁気的に接続するものであ
り、例えばパルスカウンタの制御によるアナログ
式スイツチング回路でよい。 Each magnetic material 14 is connected to a known switching circuit 15.
Thus, it is magnetically connected to the magnetism generating means 16. The magnetism generating means 16 may be of the known type consisting of a magnetic core 17 and a coil 19 wound around it and connected to a current source 18. Switching circuit 15
The magnetic pole terminals 21 and 22 of the magnetic core 17 are magnetically connected to any pair of adjacent magnetic members 14, and may be an analog switching circuit controlled by a pulse counter, for example.

第２図には本発明の別の実施例に係る磁気ヘツ
ド２０を示す。この磁気ヘツドは非磁性円板２３
と磁性円板２４とを交互に積層したヘツド本体２
５を有する。従つて、この場合もヘツド本体２５
の周面には磁性帯域と非磁性帯域とが交互に位置
する。この実施例の場合も各磁性帯域２７は対応
する磁性材１に接続されているが、スイツチング
回路１５の代りに、スライド式の磁気発生手段１
６を用いる。即ち、一端を磁性帯域２７に接続し
た磁性材１４の他端を、磁性帯域間の間隔よりも
充分ひろげた間隔で支持体２６に保持させ、普通
のリードスクリユー等の送り装置で磁気発生装置
１６を支持体２６上で左右に滑動させることによ
り、磁気発生装置１６を隣接する任意の一対の磁
性材１４に接続させる。この場合の利点は、記録
すべきトラツクの密度が高くこれに対応して磁性
帯域間の間隔を極狭にしても支持体２６上の磁性
材端子の間隔が広いからリードスクリユー等の誤
差があつてもオフ・トラツクの心配がまつたくな
いことである。 FIG. 2 shows a magnetic head 20 according to another embodiment of the invention. This magnetic head has a non-magnetic disc 23
The head body 2 is made up of alternating layers of magnetic disks 24 and magnetic discs 24.
5. Therefore, in this case as well, the head body 25
Magnetic zones and non-magnetic zones are alternately located on the circumferential surface of the magnetic field. In this embodiment as well, each magnetic band 27 is connected to a corresponding magnetic material 1, but instead of the switching circuit 15, a sliding magnetic generating means 1 is used.
6 is used. That is, one end of the magnetic material 14 is connected to the magnetic band 27, and the other end of the magnetic material 14 is held on the support body 26 with an interval that is sufficiently wider than the interval between the magnetic bands, and the magnetic material 14 is connected to the magnetic generating device using a feeding device such as an ordinary reed screw. By sliding the magnetic members 16 from side to side on the support 26, the magnetism generating device 16 is connected to any pair of adjacent magnetic members 14. The advantage of this case is that the density of the tracks to be recorded is high, and even if the spacing between the magnetic bands is made extremely narrow, the spacing between the magnetic material terminals on the support 26 is wide, so errors such as lead screw errors are avoided. The last thing you need to worry about is off-track.

第３図は本発明の更に別の実施例に係る磁気ヘ
ツド３０を示すもので、この例では非磁性本体３
１を円筒体で形成し、各磁性帯域３２に接続され
た磁性材３３を円筒内面に配置して成る。 FIG. 3 shows a magnetic head 30 according to yet another embodiment of the present invention, in which a non-magnetic body 3
1 is formed of a cylindrical body, and a magnetic material 33 connected to each magnetic band 32 is arranged on the inner surface of the cylinder.

第４図に示す他の実施例に係る磁気ヘツド４０
はグルーブ４１付きの磁性円柱４２と非磁性円板
４３とを交互に積層して成るヘツド本体４４を有
し、各磁性円柱４２に一対の磁性材１４′，１
４″が接続してある。この場合は、対をなす磁性
材１４′，１４″を既知のスイツチング回路で磁気
発生手段に接続するか（第１図の例のように）、
又は第２図の例のようにスライド式磁気発生手段
を磁性材１４′，１４″に接続すれば、グルーブ４
１の両側に対向磁極が発生する。 Magnetic head 40 according to another embodiment shown in FIG.
has a head body 44 formed by alternately laminating magnetic cylinders 42 with grooves 41 and non-magnetic disks 43, each magnetic cylinder 42 having a pair of magnetic materials 14', 1
4" are connected. In this case, either the pair of magnetic materials 14' and 14" are connected to the magnetism generating means by a known switching circuit (as in the example in FIG. 1), or
Alternatively, if the slide type magnetism generating means is connected to the magnetic materials 14' and 14'' as in the example shown in FIG.
Opposing magnetic poles are generated on both sides of 1.

次に、第５〜６図に示す実施例に係る磁気ヘツ
ド５０を用いてフロツピーデイスクに対し記録を
行なう動作を説明する。第５，６図の磁気ヘツド
５０は非磁性体のさい頭円すい形状のヘツド本体
５１を有し、その周面には、第１図のものと同様
に、フロツピーデイスク６０上の記録トラツク６
１の数に対応して磁性帯域５２が設けてあり、各
磁性帯域５２は対応する磁性材１４、スイツチン
グ回路１５を介して第１図のものと同様に磁気発
生手段１６に接続されている（第５，６図にはス
イツチング回路、磁気発生手段は図示しない）。
磁気ヘツド５０はフロツピーデイスク６０に近接
して位置決めされ適当に静止保持される。例え
ば、フロツピーデイスクの記録トラツク６１ａ
（第６図）に対し記録再生を行なう場合、このト
ラツク６１ａに関連する一対の磁性帯域５２ａ，
５２ｂに対応する一対の磁性材１４ａ，１４ｂを
スイツチング回路１５（第１図）により磁気発生
手段１６に接続する。すると、磁性帯域５２ａ，
５２ｂが対向磁極（Ｎ，Ｓ極）に磁化されて磁気
ヘツド部を構成し、このようにしてトラツク６１
ａの磁気記録・再生が行なわれる。次に、記録ト
ラツク６１ｂに対し記録再生を行なう場合は、ス
イツチング回路１５を適当に切換えてトラツク６
１ｂに関連する１対の磁性帯域５２に対応する１
対の磁性材１４ｄ，１４ｅを磁気発生手段１６に
磁気的に接続すれば、トラツク６１ｂに対し記録
再生を行なうことができる。このようにして、任
意の記録トラツク６１に対してこれに関連する一
対の磁性帯域を磁気的に附勢することにより、そ
のトラツクに対する記録を行なうことができる。
一旦位置決めした磁気ヘツド５０はトラツク６１
の記録毎にフロツピーデイスクの半径方向へ動か
す必要がないから、オフ・トラツクの必配はまつ
たくない。フロツピーデイスクと磁気ヘツドとを
接触させて記録を行なう場合はヘツド５０を自軸
５３のまわりで回転可能にすると共に、デイスク
６０上の記録トラツク６１の回転周速度に適合す
るようにヘツド５０の円すい中心角を適当に選べ
ばよい。 Next, the operation of recording on a floppy disk using the magnetic head 50 according to the embodiment shown in FIGS. 5 and 6 will be described. The magnetic head 50 shown in FIGS. 5 and 6 has a truncated cone-shaped head body 51 made of a non-magnetic material, and the recording track 6 on the floppy disk 60 is disposed on the circumferential surface of the head body 51, as in the case of FIG.
Magnetic bands 52 are provided corresponding to the number 1, and each magnetic band 52 is connected to the magnetism generating means 16 via a corresponding magnetic material 14 and a switching circuit 15 in the same way as in FIG. (The switching circuit and the magnetism generating means are not shown in FIGS. 5 and 6).
The magnetic head 50 is positioned in close proximity to the floppy disk 60 and held suitably stationary. For example, the recording track 61a of a floppy disk
(Fig. 6), a pair of magnetic bands 52a,
A pair of magnetic materials 14a, 14b corresponding to 52b are connected to magnetism generating means 16 by a switching circuit 15 (FIG. 1). Then, the magnetic bands 52a,
52b are magnetized to opposite magnetic poles (N, S poles) to constitute a magnetic head portion, and in this way, the track 61
Magnetic recording and reproduction of a is performed. Next, when performing recording/reproduction on the recording track 61b, the switching circuit 15 is appropriately switched to switch the recording track 61b.
1 corresponding to a pair of magnetic bands 52 associated with 1b
By magnetically connecting the pair of magnetic materials 14d and 14e to the magnetism generating means 16, recording and reproduction can be performed on the track 61b. In this way, by magnetically energizing a pair of magnetic bands associated with any recording track 61, recording can be performed on that track.
Once positioned, the magnetic head 50 is moved to the track 61.
Since there is no need to move the floppy disk in the radial direction for each recording, there is no need for off-track movement. When recording is performed by bringing a floppy disk into contact with a magnetic head, the head 50 is made rotatable around its own axis 53, and the head 50 is adjusted to match the rotational circumferential speed of the recording track 61 on the disk 60. Just choose the central angle of the cone appropriately.

本発明の磁気ヘツドはフロツピーデイスクのみ
ならず任意の磁気テープに対し記録再生を行なう
ことが可能であることはいうまでもない。 It goes without saying that the magnetic head of the present invention is capable of recording and reproducing not only floppy disks but also any magnetic tape.

以上のような構成のため、本発明の磁気ヘツド
はオフ・トラツクの危険をまつたく伴なわずに、
トラツク密度の高い記録媒体に対しても容易に記
録を行なうことができるので、垂直磁化方式の遂
行には最適である。 Due to the above configuration, the magnetic head of the present invention can be used without any risk of off-track.
Since it is possible to easily perform recording even on a recording medium with a high track density, it is optimal for carrying out the perpendicular magnetization method.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の第１実施例に係る磁気ヘツド
を示す図。第２図は本発明の第２実施例に係る磁
気ヘツドを示す部分断面図。第３図は本発明の第
３実施例に係る磁気ヘツドのヘツド本体の部分断
面図。第４図は本発明の第４実施例に係る磁気ヘ
ツドのヘツド本体部分を示す図。第５図は本発明
の第５実施例の磁気ヘツド及びこれにより記録さ
れるフロツピーデイスクの関係を示す概略平面
図。第６図は第５図の部分側面図である。 １０，２０，３０，４０，５０……磁気ヘツ
ド、１１……ヘツド本体、１２……磁性帯域、１
３……非磁性帯域、１４……磁性材、１５……ス
イツチング回路、１６……磁気発生手段。 FIG. 1 is a diagram showing a magnetic head according to a first embodiment of the present invention. FIG. 2 is a partial sectional view showing a magnetic head according to a second embodiment of the invention. FIG. 3 is a partial sectional view of the head body of a magnetic head according to a third embodiment of the present invention. FIG. 4 is a diagram showing a head main body portion of a magnetic head according to a fourth embodiment of the present invention. FIG. 5 is a schematic plan view showing the relationship between a magnetic head and a floppy disk recorded by the magnetic head according to a fifth embodiment of the present invention. FIG. 6 is a partial side view of FIG. 5. 10, 20, 30, 40, 50...Magnetic head, 11...Head body, 12...Magnetic band, 1
3... Non-magnetic band, 14... Magnetic material, 15... Switching circuit, 16... Magnetism generating means.

Claims (1)

【特許請求の範囲】 １ 非磁性本体から成る回転可能なヘツドと、該
ヘツドの外表面に間隔をおいて配設した複数の環
状磁性帯域と、各磁性帯域に接している複数の磁
性材と、１つ又はそれ以上の磁気発生手段と、隣
接する対をなす磁性材を磁気発生手段に対して選
択的かつ磁気的に接続する手段と、から成る、磁
気ヘツド。 ２ 磁気発生手段が滑動可能である請求項１の磁
気ヘツド。 ３ ヘツドがさい頭円錐形状を有している請求項
１の磁気ヘツド。 ４ 磁性本体から成る回転可能なヘツドであつて
周辺に複数の環状溝を有しているヘツドと、隣接
する２つの溝間に位置づけられた環状周辺面のほ
ぼ中央付近に環状に配設した非磁性円板と、非磁
性円板によつて分別された前記環状周辺面に接触
している複数の磁性体と、１つ又はそれ以上の磁
気発生手段と、２つの隣接する対をなしている磁
性材を磁気発生手段へ選択的かつ磁気的に接続し
ている手段と、から成り、磁気発生手段へ接続さ
れた２つの隣接する周辺面の夫々が該２つの周辺
面部分の対向部分に夫々反対の極を提供している
磁気ヘツド。[Scope of Claims] 1. A rotatable head made of a non-magnetic body, a plurality of annular magnetic bands disposed at intervals on the outer surface of the head, and a plurality of magnetic materials in contact with each magnetic band. , one or more magnetism generating means, and means for selectively magnetically connecting adjacent pairs of magnetic materials to the magnetism generating means. 2. The magnetic head according to claim 1, wherein the magnetism generating means is slidable. 3. The magnetic head of claim 1, wherein the head has a frustoconical shape. 4. A rotatable head consisting of a magnetic body and having a plurality of annular grooves around the periphery, and a non-circular head disposed annularly around the center of the annular peripheral surface located between two adjacent grooves. a magnetic disk, a plurality of magnetic bodies in contact with the annular peripheral surface separated by a non-magnetic disk, and one or more magnetism generating means, forming two adjacent pairs; means for selectively and magnetically connecting a magnetic material to the magnetism generating means, each of two adjacent peripheral surfaces connected to the magnetism generating means being respectively connected to opposing portions of the two peripheral surface portions; Magnetic head providing opposite poles.
JP10990983A 1983-06-18 1983-06-18 Magnetic head Granted JPS601613A (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
JP10990983A JPS601613A (en) 1983-06-18 1983-06-18 Magnetic head
US06/620,184 US4626945A (en) 1983-06-18 1984-06-13 Magnetic head
CA000456696A CA1223958A (en) 1983-06-18 1984-06-15 Magnetic head
MX201679A MX157468A (en) 1983-06-18 1984-06-15 IMPROVEMENTS IN MAGNETIC HEAD FOR RECORDING
EP84106875A EP0129226B1 (en) 1983-06-18 1984-06-15 Magnetic head
BR8402943A BR8402943A (en) 1983-06-18 1984-06-15 MAGNETIC HEAD
NO842404A NO164685C (en) 1983-06-18 1984-06-15 MAGNETIC HEAD.
DE8484106875T DE3464526D1 (en) 1983-06-18 1984-06-15 Magnetic head
BE0/213157A BE899932A (en) 1983-06-18 1984-06-15 MAGNETIC HEAD.
AT84106875T ATE28107T1 (en) 1983-06-18 1984-06-15 MAGNETIC HEAD.
AU29410/84A AU564893B2 (en) 1983-06-18 1984-06-15 Magnetic head
DK294184A DK161921C (en) 1983-06-18 1984-06-15 MAGNET HEAD
IT67617/84A IT1196715B (en) 1983-06-18 1984-06-15 MAGNETIC HEAD
CH2956/84A CH665725A5 (en) 1983-06-18 1984-06-18 MAGNETIC TONE HEAD.
FR8409512A FR2548422A1 (en) 1983-06-18 1984-06-18 MAGNETIC RECORDING OR READING HEAD ON MAGNETIC MEDIUM
KR1019840003413A KR920001153B1 (en) 1983-06-18 1984-06-18 Magnetic head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10990983A JPS601613A (en) 1983-06-18 1983-06-18 Magnetic head

Publications (2)

Publication Number Publication Date
JPS601613A JPS601613A (en) 1985-01-07
JPH0452523B2 true JPH0452523B2 (en) 1992-08-24

Family

ID=14522219

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10990983A Granted JPS601613A (en) 1983-06-18 1983-06-18 Magnetic head

Country Status (2)

Country Link
JP (1) JPS601613A (en)
BE (1) BE899932A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4512373Y1 (en) * 1967-10-09 1970-05-29

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4512373Y1 (en) * 1967-10-09 1970-05-29

Also Published As

Publication number Publication date
BE899932A (en) 1984-10-01
JPS601613A (en) 1985-01-07

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