BE547698A - - Google Patents
Info
- Publication number
- BE547698A BE547698A BE547698DA BE547698A BE 547698 A BE547698 A BE 547698A BE 547698D A BE547698D A BE 547698DA BE 547698 A BE547698 A BE 547698A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/12—Semiconductors
- C25D7/123—Semiconductors first coated with a seed layer or a conductive layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/26—Selection of soldering or welding materials proper with the principal constituent melting at less than 400 degrees C
- B23K35/262—Sn as the principal constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3006—Ag as the principal constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/36—Selection of materials, or shaping, to facilitate cooling or heating, e.g. heatsinks
- H01L23/367—Cooling facilitated by shape of device
-
- 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
- H01L23/492—Bases or plates or solder therefor
- H01L23/4924—Bases or plates or solder therefor characterised by the materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01005—Boron [B]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01006—Carbon [C]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01012—Magnesium [Mg]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01013—Aluminum [Al]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01019—Potassium [K]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01023—Vanadium [V]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01024—Chromium [Cr]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01025—Manganese [Mn]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01029—Copper [Cu]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/0103—Zinc [Zn]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01032—Germanium [Ge]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01033—Arsenic [As]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01039—Yttrium [Y]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01042—Molybdenum [Mo]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01047—Silver [Ag]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01049—Indium [In]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01051—Antimony [Sb]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01057—Lanthanum [La]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01072—Hafnium [Hf]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01074—Tungsten [W]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01075—Rhenium [Re]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01076—Osmium [Os]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01078—Platinum [Pt]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01079—Gold [Au]
-
- 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
- H01L2924/01—Chemical elements
- H01L2924/01082—Lead [Pb]
-
- 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
- H01L2924/013—Alloys
- H01L2924/014—Solder alloys
-
- 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
- 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
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/102—Material of the semiconductor or solid state bodies
- H01L2924/1025—Semiconducting materials
- H01L2924/10251—Elemental semiconductors, i.e. Group IV
- H01L2924/10253—Silicon [Si]
-
- 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
- H01L2924/10—Details of semiconductor or other solid state devices to be connected
- H01L2924/11—Device type
- H01L2924/12—Passive devices, e.g. 2 terminal devices
- H01L2924/1203—Rectifying Diode
- H01L2924/12036—PN diode
-
- 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
- H01L2924/30—Technical effects
- H01L2924/301—Electrical effects
- H01L2924/3011—Impedance
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Computer Hardware Design (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
- Die Bonding (AREA)
- Ceramic Products (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Contacts (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US507312A US2763822A (en) | 1955-05-10 | 1955-05-10 | Silicon semiconductor devices |
US525595A US2801375A (en) | 1955-08-01 | 1955-08-01 | Silicon semiconductor devices and processes for making them |
Publications (1)
Publication Number | Publication Date |
---|---|
BE547698A true BE547698A (et) | 1900-01-01 |
Family
ID=27055794
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE547698D BE547698A (et) | 1955-05-10 | ||
BE550001A BE550001A (fr) | 1955-05-10 | 1956-08-01 | Semiconducteurs au silicium et procedes pour leur fabrication |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BE550001A BE550001A (fr) | 1955-05-10 | 1956-08-01 | Semiconducteurs au silicium et procedes pour leur fabrication |
Country Status (6)
Country | Link |
---|---|
BE (2) | BE550001A (et) |
CH (2) | CH350720A (et) |
DE (2) | DE1050450B (et) |
FR (2) | FR1153475A (et) |
GB (2) | GB832067A (et) |
NL (2) | NL208617A (et) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1285068B (de) * | 1957-01-11 | 1968-12-12 | Siemens Ag | Legierungskontakt auf mit einer Goldschicht versehenen Halbleiterkristallen |
NL243222A (et) * | 1958-09-10 | 1900-01-01 | ||
NL242265A (et) * | 1958-09-30 | 1900-01-01 | ||
NL239127A (et) * | 1959-05-12 | |||
DE1233949B (de) * | 1959-07-13 | 1967-02-09 | Siemens Ag | Verfahren zur Herstellung einer Halbleiter-gleichrichteranordnung mit einem einkristallinen Halbleiterkoerper |
NL249694A (et) * | 1959-12-30 | |||
DE1113519B (de) * | 1960-02-25 | 1961-09-07 | Bosch Gmbh Robert | Siliziumgleichrichter fuer hohe Stromstaerken |
NL260951A (et) * | 1960-03-07 | |||
DE1153461B (de) * | 1960-06-23 | 1963-08-29 | Siemens Ag | Halbleiteranordnung |
DE1141029B (de) * | 1960-06-23 | 1962-12-13 | Siemens Ag | Halbleiteranordnung und Verfahren zu ihrer Herstellung |
NL269346A (et) * | 1960-09-20 | |||
DE1133834B (de) * | 1960-09-21 | 1962-07-26 | Siemens Ag | Siliziumgleichrichter und Verfahren zu dessen Herstellung |
NL270339A (et) * | 1960-10-20 | |||
DE1229649B (de) * | 1961-08-10 | 1966-12-01 | Siemens Ag | Verfahren zum Herstellen eines Halbleiter-elementes und Halbleiteranordnung mit einem nach diesem Verfahren hergestellten Halbleiterelement |
DE1240187B (de) * | 1961-08-10 | 1967-05-11 | Siemens Ag | Verfahren zur Herstellung eines sperrfreien Kontaktes durch Auflegieren von Aluminium |
DE1246129B (de) * | 1961-12-28 | 1967-08-03 | Westinghouse Electric Corp | Verfahren zum Herstellen eines Halbleiterbauelementes |
DE1185731B (de) * | 1962-03-28 | 1965-01-21 | Siemens Ag | Halbleiterelement mit pn-UEbergang |
DE1295697B (de) * | 1962-05-23 | 1969-05-22 | Walter Brandt Gmbh | Halbleiterbauelement und Verfahren zu seiner Herstellung |
US3368120A (en) * | 1965-03-22 | 1968-02-06 | Gen Electric | Multilayer contact system for semiconductor devices |
DE1483298B1 (de) * | 1965-06-11 | 1971-01-28 | Siemens Ag | Elektrische Kontaktanordnung zwischen einem Germanium-Silizium-Halbleiterkoerper und einem Kontaktstueck und Verfahren zur Herstellung derselben |
FR2046593A5 (et) * | 1970-04-30 | 1971-03-05 | Silec Semi Conducteurs | |
GB2031223A (en) * | 1978-09-22 | 1980-04-16 | Gen Instrument Corp | Method for bonding a refractory metal contact member to a semiconductor body |
SE500281C2 (sv) * | 1992-11-24 | 1994-05-24 | Asea Brown Boveri | Anordning för kylning av skivformiga kraftelektronikelement jämte skivformigt kraftelektronikelement avsett att monteras i sådan kylanordning |
JP6079375B2 (ja) * | 2013-03-29 | 2017-02-15 | 三菱マテリアル株式会社 | ハンダ粉末及びその製造方法並びにこの粉末を用いたハンダ用ペースト |
DE102015108056A1 (de) | 2015-05-21 | 2016-11-24 | Osram Opto Semiconductors Gmbh | Optoelektronisches Halbleiterbauteil, optoelektronische Anordnung und Verfahren zur Herstellung eines optoelektronischen Halbleiterbauteils |
CN112186044A (zh) * | 2020-09-30 | 2021-01-05 | 中国振华集团永光电子有限公司(国营第八七三厂) | 一种玻璃钝化实体封装低压二极管及其制造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2220961A (en) * | 1937-11-06 | 1940-11-12 | Bell Telephone Labor Inc | Soldering alloy |
US2555001A (en) * | 1947-02-04 | 1951-05-29 | Bell Telephone Labor Inc | Bonded article and method of bonding |
US2567970A (en) * | 1947-12-24 | 1951-09-18 | Bell Telephone Labor Inc | Semiconductor comprising silicon and method of making it |
DE872602C (de) * | 1951-03-20 | 1953-04-02 | Siemens Ag | Verfahren zur Befestigung von Halbleitern |
NL91163C (et) * | 1952-09-16 | |||
NL104654C (et) * | 1952-12-31 | 1900-01-01 | ||
GB8817261D0 (en) * | 1988-07-20 | 1988-08-24 | Sperry Sun Inc | Down-hole bearing assemblies for maintaining survey instrument assembly & core barrel orientation |
-
0
- NL NL109558D patent/NL109558C/xx active
- BE BE547698D patent/BE547698A/xx unknown
- NL NL208617D patent/NL208617A/xx unknown
-
1956
- 1956-04-30 DE DEW18965A patent/DE1050450B/de active Pending
- 1956-05-04 GB GB13826/56A patent/GB832067A/en not_active Expired
- 1956-05-09 FR FR1153475D patent/FR1153475A/fr not_active Expired
- 1956-05-09 CH CH350720D patent/CH350720A/de unknown
- 1956-07-11 DE DEW19399A patent/DE1292260B/de active Pending
- 1956-07-27 GB GB23230/56A patent/GB823559A/en not_active Expired
- 1956-07-30 FR FR1157057D patent/FR1157057A/fr not_active Expired
- 1956-07-31 CH CH3604156A patent/CH367896A/de unknown
- 1956-08-01 BE BE550001A patent/BE550001A/fr unknown
Also Published As
Publication number | Publication date |
---|---|
CH350720A (de) | 1960-12-15 |
GB823559A (en) | 1959-11-11 |
FR1157057A (fr) | 1958-05-27 |
NL109558C (et) | 1900-01-01 |
BE550001A (fr) | 1956-08-31 |
FR1153475A (fr) | 1958-03-11 |
GB832067A (en) | 1960-04-06 |
NL208617A (et) | 1900-01-01 |
CH367896A (de) | 1963-03-15 |
DE1050450B (de) | 1959-02-12 |
DE1292260B (de) | 1969-04-10 |