FR1466378A - Système de palier, notamment pour outils pour le forage du sol - Google Patents
Système de palier, notamment pour outils pour le forage du solInfo
- Publication number
- FR1466378A FR1466378A FR37548A FR37548A FR1466378A FR 1466378 A FR1466378 A FR 1466378A FR 37548 A FR37548 A FR 37548A FR 37548 A FR37548 A FR 37548A FR 1466378 A FR1466378 A FR 1466378A
- Authority
- FR
- France
- Prior art keywords
- tools
- bearing system
- drilling soil
- drilling
- soil
- 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
Links
- 238000005553 drilling Methods 0.000 title 1
- 239000002689 soil Substances 0.000 title 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/08—Roller bits
- E21B10/22—Roller bits characterised by bearing, lubrication or sealing details
- E21B10/23—Roller bits characterised by bearing, lubrication or sealing details with drilling fluid supply to the bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/12—Structural composition; Use of special materials or surface treatments, e.g. for rust-proofing
- F16C33/121—Use of special materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/14—Special methods of manufacture; Running-in
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/24—Brasses; Bushes; Linings with different areas of the sliding surface consisting of different materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2204/00—Metallic materials; Alloys
- F16C2204/02—Noble metals
- F16C2204/04—Noble metals based on silver
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2220/00—Shaping
- F16C2220/60—Shaping by removing material, e.g. machining
- F16C2220/70—Shaping by removing material, e.g. machining by grinding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/10—Hardening, e.g. carburizing, carbo-nitriding
- F16C2223/12—Hardening, e.g. carburizing, carbo-nitriding with carburizing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2223/00—Surface treatments; Hardening; Coating
- F16C2223/30—Coating surfaces
- F16C2223/46—Coating surfaces by welding, e.g. by using a laser to build a layer
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/10—Force connections, e.g. clamping
- F16C2226/12—Force connections, e.g. clamping by press-fit, e.g. plug-in
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/30—Material joints
- F16C2226/32—Material joints by soldering
- F16C2226/34—Material joints by soldering by brazing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
- F16C2226/30—Material joints
- F16C2226/36—Material joints by welding
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2352/00—Apparatus for drilling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Rolling Contact Bearings (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Sliding-Contact Bearings (AREA)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US274578A US3235316A (en) | 1963-04-22 | 1963-04-22 | Journal bearing with alternating surface areas of wear resistant and antigalling materials |
DE19641425958 DE1425958A1 (de) | 1963-04-22 | 1964-04-15 | Gleitlager,insbesondere fuer Tiefbohrwerkzeuge |
AT339164A AT264418B (de) | 1963-04-22 | 1964-04-17 | Hochbelastbares Gleitlager |
FR37548A FR1466378A (fr) | 1963-04-22 | 1965-11-06 | Système de palier, notamment pour outils pour le forage du sol |
NL6515164A NL6515164A (nl) | 1963-04-22 | 1965-11-23 | Leger voor grondboorgereedschap |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US274578A US3235316A (en) | 1963-04-22 | 1963-04-22 | Journal bearing with alternating surface areas of wear resistant and antigalling materials |
FR37548A FR1466378A (fr) | 1963-04-22 | 1965-11-06 | Système de palier, notamment pour outils pour le forage du sol |
NL6515164A NL6515164A (nl) | 1963-04-22 | 1965-11-23 | Leger voor grondboorgereedschap |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1466378A true FR1466378A (fr) | 1967-01-20 |
Family
ID=30118787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR37548A Expired FR1466378A (fr) | 1963-04-22 | 1965-11-06 | Système de palier, notamment pour outils pour le forage du sol |
Country Status (5)
Country | Link |
---|---|
US (1) | US3235316A (fr) |
AT (1) | AT264418B (fr) |
DE (1) | DE1425958A1 (fr) |
FR (1) | FR1466378A (fr) |
NL (1) | NL6515164A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2300931A1 (fr) * | 1975-02-14 | 1976-09-10 | Creusot Loire | Palier lisse |
Families Citing this family (59)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3446541A (en) * | 1964-10-30 | 1969-05-27 | Kunio Nakano | Small electric motor |
US3361494A (en) * | 1966-08-04 | 1968-01-02 | Hughes Tool Co | Journal bearing |
NL149577B (nl) * | 1967-03-23 | 1976-05-17 | Smith Ind International | Leger. |
US3476446A (en) * | 1967-06-08 | 1969-11-04 | Smith International | Rock bit and bearing |
US3784264A (en) * | 1971-03-02 | 1974-01-08 | Dresser Ind | Earth boring bit bearing system having a pitted bearing surface |
US3915514A (en) * | 1972-10-18 | 1975-10-28 | Dresser Ind | Method of making a bearing system having entrained wear-resistant particles |
US3856358A (en) * | 1973-04-27 | 1974-12-24 | Cincinnati Mine Machinery Co | Wear-resistant inserts for in surfaces of the links of cutter chains and the like to retard wear thereof |
US3885838A (en) * | 1973-06-14 | 1975-05-27 | Reed Tool Co | Drill bit bearings |
US4207658A (en) * | 1973-09-10 | 1980-06-17 | Dresser Industries, Inc. | Journal and pilot bearings with alternating surface areas of wear resistant and anti-galling materials |
US3984158A (en) * | 1973-09-10 | 1976-10-05 | Dresser Industries, Inc. | Journal and pilot bearings with alternating surface areas of wear resistant and anti-galling materials |
US3913988A (en) * | 1974-06-12 | 1975-10-21 | Hughes Tool Co | Journal bearing and method utilizing high carbon surface |
US3890018A (en) * | 1974-07-19 | 1975-06-17 | Dresser Ind | Rotary rock bit with wiper pad lubrication system |
US4021084A (en) * | 1975-02-04 | 1977-05-03 | Garner Lloyd L | Drilling bit bearing structure |
US4037300A (en) * | 1975-02-04 | 1977-07-26 | Smith International, Inc. | Drilling bit bearing structure |
NO762541L (fr) * | 1975-08-13 | 1977-02-15 | Reed Tool Co | |
US4040680A (en) * | 1976-09-07 | 1977-08-09 | Dresser Industries, Inc. | Rock bit having a ball bearing raceway with anti-galling material |
DE2706290A1 (de) * | 1977-02-15 | 1978-08-17 | Skf Kugellagerfabriken Gmbh | Einrichtung zum schmieren der lager von schneidrollen eines rollenmeissels |
SE412088B (sv) * | 1977-06-03 | 1980-02-18 | Sandvik Ab | Lageranordning vid roterande borrkronor |
US4236764A (en) * | 1977-10-28 | 1980-12-02 | Hughes Tool Company | Earth boring drill bit with snap ring cutter retention |
US4344658A (en) * | 1977-10-28 | 1982-08-17 | Hughes Tool Company | Earth boring drill bit with snap ring cutter retention |
DE2756964C2 (de) * | 1977-12-21 | 1986-01-30 | SKF GmbH, 8720 Schweinfurt | Rollenmeißel mit mehreren Schneidrollen |
US4172395A (en) * | 1978-08-07 | 1979-10-30 | Dresser Industries, Inc. | Method of manufacturing a rotary rock bit |
US4232912A (en) * | 1978-12-11 | 1980-11-11 | Dresser Industries, Inc. | Earth boring bit with gridded ferrous bearing surface |
US4248485A (en) * | 1979-10-01 | 1981-02-03 | Dresser Industries, Inc. | Earth boring bit with textured bearing surface |
US4240674A (en) * | 1979-11-19 | 1980-12-23 | Evans Robert F | Positive lubricating and indexing bearing assembly |
US4333691A (en) * | 1980-10-09 | 1982-06-08 | Dresser Industries, Inc. | Rotary rock bit with improved thrust flange |
US4330158A (en) * | 1980-10-09 | 1982-05-18 | Dresser Industries, Inc. | Rotary rock bit with improved thrust flange |
AT369145B (de) * | 1981-02-06 | 1982-12-10 | Miba Gleitlager Ag | Hochbelastbares gleitlager |
SE446646B (sv) * | 1981-12-15 | 1986-09-29 | Santrade Ltd | Bergborrkrona och sett att tillverka denna |
US4410284A (en) * | 1982-04-22 | 1983-10-18 | Smith International, Inc. | Composite floating element thrust bearing |
US4514098A (en) * | 1982-09-01 | 1985-04-30 | Dresser Industries, Inc. | Wound wire bearing |
US4474861A (en) * | 1983-03-09 | 1984-10-02 | Smith International, Inc. | Composite bearing structure of alternating hard and soft metal, and process for making the same |
US4562892A (en) * | 1984-07-23 | 1986-01-07 | Cdp, Ltd. | Rolling cutters for drill bits |
US4554130A (en) * | 1984-10-01 | 1985-11-19 | Cdp, Ltd. | Consolidation of a part from separate metallic components |
US4630692A (en) * | 1984-07-23 | 1986-12-23 | Cdp, Ltd. | Consolidation of a drilling element from separate metallic components |
US4592252A (en) * | 1984-07-23 | 1986-06-03 | Cdp, Ltd. | Rolling cutters for drill bits, and processes to produce same |
US4597456A (en) * | 1984-07-23 | 1986-07-01 | Cdp, Ltd. | Conical cutters for drill bits, and processes to produce same |
US4738322A (en) * | 1984-12-21 | 1988-04-19 | Smith International Inc. | Polycrystalline diamond bearing system for a roller cone rock bit |
US4802539A (en) * | 1984-12-21 | 1989-02-07 | Smith International, Inc. | Polycrystalline diamond bearing system for a roller cone rock bit |
US4603062A (en) * | 1985-01-07 | 1986-07-29 | Cdp, Ltd. | Pump liners and a method of cladding the same |
US4655851A (en) * | 1985-06-11 | 1987-04-07 | Hughes Tool Company-Usa | Simultaneous carburizing and boronizing of earth boring drill bits |
US4834400A (en) * | 1988-03-15 | 1989-05-30 | University Of New Mexico | Differential surface roughness dynamic seals and bearings |
US4875532A (en) * | 1988-09-19 | 1989-10-24 | Dresser Industries, Inc. | Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material |
US5161898A (en) * | 1991-07-05 | 1992-11-10 | Camco International Inc. | Aluminide coated bearing elements for roller cutter drill bits |
US5403263A (en) * | 1992-05-21 | 1995-04-04 | P.I.P. Surgical Audiotape Series, Inc. | Method of reducing the recovery time and stress associated with surgery |
GB9415668D0 (en) * | 1994-08-03 | 1994-09-21 | Camco Int | Improvements in or relating to rolling cutter drill bits |
US5593231A (en) * | 1995-01-17 | 1997-01-14 | Dresser Industries, Inc. | Hydrodynamic bearing |
US6416224B1 (en) | 1995-07-28 | 2002-07-09 | Schlumberger Technology Corporation | Rolling cutter drill bits |
US6354740B1 (en) | 1995-07-28 | 2002-03-12 | Camco International Inc. | Rolling cutter drill bits |
US5842531A (en) * | 1996-04-24 | 1998-12-01 | Dresser Industries, Inc. | Rotary rock bit with infiltrated bearings |
US5794726A (en) * | 1996-04-24 | 1998-08-18 | Dresser Indistries | Rotary rock bit with infiltrated bearings |
US6109792A (en) * | 1998-03-02 | 2000-08-29 | Koenig; Larry E. | Combination stack tightener and journal bearing assembly |
US6000852A (en) | 1998-03-02 | 1999-12-14 | Koenig; Larry E. | Journal bearing assembly |
US6250577B1 (en) | 1999-06-08 | 2001-06-26 | Larry E. Koenig | Bearing apparatus for axially stressing a rotor element carried on a rotor shaft |
US6190050B1 (en) | 1999-06-22 | 2001-02-20 | Camco International, Inc. | System and method for preparing wear-resistant bearing surfaces |
US6588934B2 (en) * | 2001-10-29 | 2003-07-08 | United Technologies Corporation | Silver-containing copper alloys for journal bearings |
DE102004004691B3 (de) * | 2004-01-29 | 2005-10-06 | Dbt Gmbh | Kettenrad für den untertägigen Bergbau |
JP2013148137A (ja) * | 2012-01-18 | 2013-08-01 | Daido Metal Co Ltd | 摺動部材 |
US11905584B2 (en) * | 2020-01-08 | 2024-02-20 | GM Global Technology Operations LLC | Apparatus and process for localized patterned surface hardening for light-weight alloys to increase wear resistance under lubricated contact |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1122565A (en) * | 1914-04-23 | 1914-12-29 | Graphite Lubricating Company | Oilless bearing. |
US1637317A (en) * | 1921-09-27 | 1927-07-26 | Bound Brook Oil Less Bearing | Bearing |
US1983283A (en) * | 1933-09-16 | 1934-12-04 | Hughes Tool Co | Bearing for drill cutters |
US2104819A (en) * | 1935-03-09 | 1938-01-11 | Hughes Tool Co | Roller boring drill |
US2329483A (en) * | 1938-05-27 | 1943-09-14 | Int Nickel Co | Bearing |
US2513634A (en) * | 1946-04-19 | 1950-07-04 | Reed Roller Bit Co | Cone bit bearing |
US2599726A (en) * | 1947-04-11 | 1952-06-10 | Gen Motors Corp | Method of making grid bearings |
US2595904A (en) * | 1948-05-06 | 1952-05-06 | Security Engineering Co Inc | Tricone rock bit |
FR1053319A (fr) * | 1952-04-02 | 1954-02-02 | Materiel De Forage Soc De Fab | Dispositif de montage pour outils à molettes |
US2823083A (en) * | 1954-11-05 | 1958-02-11 | Chicago Pneumatic Tool Co | Roller bearing for rock bit cutter |
US3062599A (en) * | 1959-11-27 | 1962-11-06 | Gen Electric | Carbon bearings with molybdenum disulphide inserts |
US3113630A (en) * | 1960-11-08 | 1963-12-10 | Edward B Williams Iii | Drill bit |
-
1963
- 1963-04-22 US US274578A patent/US3235316A/en not_active Expired - Lifetime
-
1964
- 1964-04-15 DE DE19641425958 patent/DE1425958A1/de active Pending
- 1964-04-17 AT AT339164A patent/AT264418B/de active
-
1965
- 1965-11-06 FR FR37548A patent/FR1466378A/fr not_active Expired
- 1965-11-23 NL NL6515164A patent/NL6515164A/ unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2300931A1 (fr) * | 1975-02-14 | 1976-09-10 | Creusot Loire | Palier lisse |
Also Published As
Publication number | Publication date |
---|---|
AT264418B (de) | 1968-08-26 |
DE1425958A1 (de) | 1969-03-20 |
NL6515164A (nl) | 1967-05-24 |
US3235316A (en) | 1966-02-15 |
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