JPS5062773A - - Google Patents
Info
- Publication number
- JPS5062773A JPS5062773A JP49113361A JP11336174A JPS5062773A JP S5062773 A JPS5062773 A JP S5062773A JP 49113361 A JP49113361 A JP 49113361A JP 11336174 A JP11336174 A JP 11336174A JP S5062773 A JPS5062773 A JP S5062773A
- Authority
- JP
- Japan
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
- C04B41/5116—Ag or Au
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/14—Non-insulated conductors or conductive bodies characterised by their form comprising conductive layers or films on insulating-supports
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/48—Manufacture or treatment of parts, e.g. containers, prior to assembly of the devices, using processes not provided for in a single one of the subgroups H01L21/06 - H01L21/326
- H01L21/4814—Conductive parts
- H01L21/4846—Leads on or in insulating or insulated substrates, e.g. metallisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/48—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor
- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49805—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers the leads being also applied on the sidewalls or the bottom of the substrate, e.g. leadless packages for surface mounting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/403—Edge contacts; Windows or holes in the substrate having plural connections on the walls thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/095—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00 with a principal constituent of the material being a combination of two or more materials provided in the groups H01L2924/013 - H01L2924/0715
- H01L2924/097—Glass-ceramics, e.g. devitrified glass
- H01L2924/09701—Low temperature co-fired ceramic [LTCC]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/09—Use of materials for the conductive, e.g. metallic pattern
- H05K1/092—Dispersed materials, e.g. conductive pastes or inks
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0703—Plating
- H05K2203/0723—Electroplating, e.g. finish plating
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
- H05K3/0052—Depaneling, i.e. dividing a panel into circuit boards; Working of the edges of circuit boards
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/241—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus
- H05K3/242—Reinforcing the conductive pattern characterised by the electroplating method; means therefor, e.g. baths or apparatus characterised by using temporary conductors on the printed circuit for electrically connecting areas which are to be electroplated
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/245—Reinforcing conductive patterns made by printing techniques or by other techniques for applying conductive pastes, inks or powders; Reinforcing other conductive patterns by such techniques
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
- H05K3/3431—Leadless components
- H05K3/3442—Leadless components having edge contacts, e.g. leadless chip capacitors, chip carriers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/40—Forming printed elements for providing electric connections to or between printed circuits
- H05K3/4038—Through-connections; Vertical interconnect access [VIA] connections
- H05K3/4053—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques
- H05K3/4061—Through-connections; Vertical interconnect access [VIA] connections by thick-film techniques for via connections in inorganic insulating substrates
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S148/00—Metal treatment
- Y10S148/069—Green sheets
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49799—Providing transitory integral holding or handling portion
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Manufacturing Of Printed Wiring (AREA)
- Electroplating Methods And Accessories (AREA)
- Printing Elements For Providing Electric Connections Between Printed Circuits (AREA)
- Structure Of Printed Boards (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US403404 | 1973-10-04 | ||
US403404A US3926746A (en) | 1973-10-04 | 1973-10-04 | Electrical interconnection for metallized ceramic arrays |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5062773A true JPS5062773A (ja) | 1975-05-28 |
JPS6052588B2 JPS6052588B2 (ja) | 1985-11-20 |
Family
ID=23595639
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP49113361A Expired JPS6052588B2 (ja) | 1973-10-04 | 1974-10-03 | セラミツク基板の均一金メツキ処理法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3926746A (ja) |
JP (1) | JPS6052588B2 (ja) |
DE (1) | DE2447284A1 (ja) |
GB (1) | GB1482012A (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6024093A (ja) * | 1984-06-04 | 1985-02-06 | 株式会社日立製作所 | セラミツク配線基板の製造法 |
JPS6212189A (ja) * | 1985-07-09 | 1987-01-21 | 日立エーアイシー株式会社 | プリント配線板の製造方法 |
Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS563921Y2 (ja) * | 1976-01-19 | 1981-01-28 | ||
JPS563922Y2 (ja) * | 1976-01-19 | 1981-01-28 | ||
NL7605233A (nl) * | 1976-05-17 | 1977-11-21 | Philips Nv | Van een micro circuit voorziene elementaire schijf met electrolytisch aangegroeide soldeerbollen alsmede werkwijze voor het vervaardigen daarvan. |
US4134801A (en) * | 1976-05-17 | 1979-01-16 | U.S. Philips Corporation | Terminal connections on microcircuit chips |
JPS5382170A (en) * | 1976-12-28 | 1978-07-20 | Ngk Insulators Ltd | Method of producing coupled type ic ceramic package |
US4216523A (en) * | 1977-12-02 | 1980-08-05 | Rca Corporation | Modular printed circuit board |
US4243729A (en) * | 1978-07-31 | 1981-01-06 | Semi-Alloys, Inc. | Metallic hermetic sealing cover for a container |
JPS5521128A (en) * | 1978-08-02 | 1980-02-15 | Hitachi Ltd | Lead frame used for semiconductor device and its assembling |
US4320438A (en) * | 1980-05-15 | 1982-03-16 | Cts Corporation | Multi-layer ceramic package |
US4975762A (en) * | 1981-06-11 | 1990-12-04 | General Electric Ceramics, Inc. | Alpha-particle-emitting ceramic composite cover |
DE3303165C2 (de) * | 1982-02-05 | 1993-12-09 | Hitachi Ltd | Halbleitervorrichtung mit Gehäusekörper und Verbindungsleitern |
US4681656A (en) * | 1983-02-22 | 1987-07-21 | Byrum James E | IC carrier system |
US4572757A (en) * | 1984-01-23 | 1986-02-25 | The Jade Corporation | Method of making a microcircuit substrate |
IL78192A (en) * | 1985-04-12 | 1992-03-29 | Hughes Aircraft Co | Mini chip carrier slotted array |
US4802277A (en) * | 1985-04-12 | 1989-02-07 | Hughes Aircraft Company | Method of making a chip carrier slotted array |
US4762606A (en) * | 1985-04-12 | 1988-08-09 | Hughes Aircraft Company | Mini chip carrier slotted array |
US4659931A (en) * | 1985-05-08 | 1987-04-21 | Grumman Aerospace Corporation | High density multi-layered integrated circuit package |
US4753820A (en) * | 1986-10-20 | 1988-06-28 | United Technologies Corporation | Variable pitch IC bond pad arrangement |
GB2223354B (en) * | 1988-09-30 | 1992-10-14 | Marconi Electronic Devices | Semiconductor devices |
EP0496491A1 (en) * | 1991-01-22 | 1992-07-29 | National Semiconductor Corporation | Leadless chip resistor capacitor carrier for hybrid circuits and a method of making the same |
US5337216A (en) * | 1992-05-18 | 1994-08-09 | Square D Company | Multichip semiconductor small outline integrated circuit package structure |
US5319521A (en) * | 1992-08-17 | 1994-06-07 | Rockwell International Corporation | Ceramic frames and capsules for Z-axis modules |
JP3008146B2 (ja) * | 1992-10-26 | 2000-02-14 | 株式会社住友金属エレクトロデバイス | 半導体素子収納用セラミックパッケージとその製造方法 |
US5314606A (en) * | 1993-02-16 | 1994-05-24 | Kyocera America, Inc. | Leadless ceramic package with improved solderabilty |
DE4319944C2 (de) * | 1993-06-03 | 1998-07-23 | Schulz Harder Juergen | Mehrfach-Substrat sowie Verfahren zu seiner Herstellung |
JPH07240479A (ja) * | 1993-09-21 | 1995-09-12 | Texas Instr Inc <Ti> | 集積回路パッケージ化の方法およびパッケージ |
US5583378A (en) * | 1994-05-16 | 1996-12-10 | Amkor Electronics, Inc. | Ball grid array integrated circuit package with thermal conductor |
JP3541491B2 (ja) * | 1994-06-22 | 2004-07-14 | セイコーエプソン株式会社 | 電子部品 |
US5832600A (en) * | 1995-06-06 | 1998-11-10 | Seiko Epson Corporation | Method of mounting electronic parts |
US5880011A (en) * | 1996-06-19 | 1999-03-09 | Pacific Trinetics Corporation | Method and apparatus for manufacturing pre-terminated chips |
DE19910078A1 (de) * | 1999-03-08 | 2000-09-28 | Bosch Gmbh Robert | Verfahren zur Erhöung der Fertigungssicherheit von Lötverbindungen |
US6248964B1 (en) | 1999-03-30 | 2001-06-19 | Bourns, Inc. | Thick film on metal encoder element |
TW498602B (en) * | 2000-05-30 | 2002-08-11 | Alps Electric Co Ltd | Circuit unit |
WO2001093314A1 (en) * | 2000-05-31 | 2001-12-06 | Dusan Slepcevic | Ball grid array with pre-slotted substrate |
US20020117753A1 (en) * | 2001-02-23 | 2002-08-29 | Lee Michael G. | Three dimensional packaging |
JP2006173483A (ja) * | 2004-12-17 | 2006-06-29 | Fuji Photo Film Co Ltd | セラミック集合基板、セラミック基板及びセラミック集合基板の製造方法 |
JP2008130701A (ja) * | 2006-11-20 | 2008-06-05 | Matsushita Electric Ind Co Ltd | 配線基板とそれを用いた半導体装置及び半導体装置の製造方法 |
US7964888B2 (en) * | 2007-04-18 | 2011-06-21 | Cree, Inc. | Semiconductor light emitting device packages and methods |
US20110247197A1 (en) * | 2008-01-09 | 2011-10-13 | Feinics Amatech Teoranta | Forming channels for an antenna wire of a transponder |
US20100006322A1 (en) * | 2008-07-09 | 2010-01-14 | Beautiful Card Corporation | Sim Card Structure |
JP2017073411A (ja) * | 2015-10-05 | 2017-04-13 | ソニー株式会社 | 発光装置 |
CN109686514B (zh) * | 2018-12-24 | 2020-06-02 | 河北中瓷电子科技股份有限公司 | 陶瓷绝缘子线路镀覆方法 |
CN111945202B (zh) * | 2020-07-21 | 2021-10-15 | 中国电子科技集团公司第十三研究所 | 陶瓷无引线外壳的盲孔电镀方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2865082A (en) * | 1953-07-16 | 1958-12-23 | Sylvania Electric Prod | Semiconductor mount and method |
US2966719A (en) * | 1954-06-15 | 1961-01-03 | American Lava Corp | Manufacture of ceramics |
US2893929A (en) * | 1955-08-03 | 1959-07-07 | Philco Corp | Method for electroplating selected regions of n-type semiconductive bodies |
FR1474973A (fr) * | 1966-02-16 | 1967-03-31 | Radiotechnique Coprim Rtc | Procédé de fabrication d'une couche de contact pour dispositifs semi-conducteurs et produits obtenus |
US3423517A (en) * | 1966-07-27 | 1969-01-21 | Dielectric Systems Inc | Monolithic ceramic electrical interconnecting structure |
US3436605A (en) * | 1966-11-23 | 1969-04-01 | Texas Instruments Inc | Packaging process for semiconductor devices and article of manufacture |
US3518756A (en) * | 1967-08-22 | 1970-07-07 | Ibm | Fabrication of multilevel ceramic,microelectronic structures |
US3618202A (en) * | 1969-05-12 | 1971-11-09 | Mallory & Co Inc P R | Ceramic chip electrical components |
US3723176A (en) * | 1969-06-19 | 1973-03-27 | American Lava Corp | Alumina palladium composite |
US3791938A (en) * | 1971-11-22 | 1974-02-12 | R Healy | Method and apparatus for fabricating selectively plated electrical contacts |
-
1973
- 1973-10-04 US US403404A patent/US3926746A/en not_active Expired - Lifetime
-
1974
- 1974-10-03 GB GB42997/74A patent/GB1482012A/en not_active Expired
- 1974-10-03 JP JP49113361A patent/JPS6052588B2/ja not_active Expired
- 1974-10-03 DE DE19742447284 patent/DE2447284A1/de active Granted
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6024093A (ja) * | 1984-06-04 | 1985-02-06 | 株式会社日立製作所 | セラミツク配線基板の製造法 |
JPS6155280B2 (ja) * | 1984-06-04 | 1986-11-27 | Hitachi Ltd | |
JPS6212189A (ja) * | 1985-07-09 | 1987-01-21 | 日立エーアイシー株式会社 | プリント配線板の製造方法 |
JPH0362034B2 (ja) * | 1985-07-09 | 1991-09-24 | Hitachi Ee Ai Shii Kk |
Also Published As
Publication number | Publication date |
---|---|
US3926746A (en) | 1975-12-16 |
DE2447284C2 (ja) | 1989-03-23 |
GB1482012A (en) | 1977-08-03 |
JPS6052588B2 (ja) | 1985-11-20 |
DE2447284A1 (de) | 1975-04-17 |