| US3461540A
              (en)
            
            * | 1966-05-23 | 1969-08-19 | Exxon Research Engineering Co | System for welding pipelines | 
        
          | US3421677A
              (en)
            
            * | 1966-08-02 | 1969-01-14 | Reynolds Metals Co | Apparatus for joining metal products | 
        
          | US3421676A
              (en)
            
            * | 1966-08-02 | 1969-01-14 | Reynolds Metals Co | Apparatus for joining metal products | 
        
          | US3519789A
              (en)
            
            * | 1966-08-08 | 1970-07-07 | Battelle Development Corp | Welding method | 
        
          | US3576966A
              (en)
            
            * | 1967-03-27 | 1971-05-04 | Air Reduction | Arc-welding in narrow gap | 
        
          | SE350208B
              (cs)
            
            * | 1968-07-11 | 1972-10-23 | Elektriska Svetsnings Ab |  | 
        
          | CH508445A
              (de)
            
            * | 1968-10-10 | 1971-06-15 | Comb Engineering Inc Comb Engi | Vorrichtung zum Verschweissen von Platten Vorrichtung zum Verschweissen von Platten | 
        
          | US3527919A
              (en)
            
            * | 1969-02-05 | 1970-09-08 | Us Navy | Extended electrode welding technique | 
        
          | GB1259072A
              (cs)
            
            * | 1969-03-04 | 1972-01-05 |  |  | 
        
          | US3617690A
              (en)
            
            * | 1970-03-12 | 1971-11-02 | Kawasaki Heavy Ind Ltd | Automatic narrow-gap joint welding method with multiple electrodes | 
        
          | GB1296519A
              (cs)
            
            * | 1970-03-19 | 1972-11-15 | Conch Int Methane Ltd |  | 
        
          | JPS5023637Y1
              (cs)
            
            * | 1970-12-19 | 1975-07-16 |  |  | 
        
          | GB1332059A
              (en)
            
            * | 1971-08-20 | 1973-10-03 | Welding Inst | Metal arc welding processes | 
        
          | US4045648A
              (en)
            
            * | 1972-07-04 | 1977-08-30 | Kobe Steel, Limited | Automatic arc welding process using a consumable nozzle | 
        
          | US4145598A
              (en)
            
            * | 1972-07-04 | 1979-03-20 | Kobe Steel, Limited | Automatic arc welding process using a consumable nozzle | 
        
          | US3825712A
              (en)
            
            * | 1972-08-03 | 1974-07-23 | Kaiser Aluminium Chem Corp | Welding process | 
        
          | FR2211320B1
              (cs)
            
            * | 1972-12-21 | 1979-06-15 | Babcock Atlantique Sa |  | 
        
          | US3826888A
              (en)
            
            * | 1973-03-05 | 1974-07-30 | Mc Donnell Douglas Corp | Deep narrow gap welding torch | 
        
          | FR2278445A1
              (fr)
            
            * | 1974-05-23 | 1976-02-13 | Kobe Steel Ltd | Procede de soudage d'aluminium et d'alliages d'aluminium dans une position horizontale | 
        
          | US3924095A
              (en)
            
            * | 1974-05-29 | 1975-12-02 | Babcock & Wilcox Co | Narrow-groove welding | 
        
          | US4110590A
              (en)
            
            * | 1974-07-09 | 1978-08-29 | Reyrolle Parsons Limited | Inert gas welding | 
        
          | JPS5161473A
              (en)
            
            * | 1974-11-27 | 1976-05-28 | Nippon Kokan Kk | Kosokukonoritsugasushiirudoaakuyosetsunyoru atsunikuteionyokochoryokukokanno seizoho | 
        
          | US4035605A
              (en)
            
            * | 1975-03-19 | 1977-07-12 | Denyo Kabushiki Kaisha | Narrow groove welding method, and welding apparatus for practicing the method | 
        
          | JPS5261141A
              (en)
            
            * | 1975-11-14 | 1977-05-20 | Nippon Kokan Kk | Narrow gap welding process | 
        
          | US4188526A
              (en)
            
            * | 1976-03-15 | 1980-02-12 | Babcock-Hitachi Kabushiki Kaisha | Narrow weld-groove welding process | 
        
          | CH594471A5
              (cs)
            
            * | 1976-07-02 | 1978-01-13 | Bbc Brown Boveri & Cie |  | 
        
          | AT347207B
              (de)
            
            * | 1976-12-21 | 1978-12-11 | Voest Ag | Verfahren zum senkrecht-stumpfschweissen von blechen, insbesondere von vertikalstoessen von grossraumbehaeltern | 
        
          | US4187410A
              (en)
            
            * | 1977-03-10 | 1980-02-05 | Vsesojuzny Nauchno-Issledovatelsky, Proektno-Konstruktorsky i Tekhnologichesky Institut Elektrosvarochnogo Oborudova | Method of multi-pass narrow groove arc welding | 
        
          | GB1583070A
              (en)
            
            * | 1977-08-03 | 1981-01-21 | Alberta Res Council | Arc welding and welding apparatus therefor | 
        
          | JPS5577975A
              (en)
            
            * | 1978-12-08 | 1980-06-12 | Hitachi Ltd | Method and apparatus for multiple electrode welding | 
        
          | US4289950A
              (en)
            
            * | 1979-05-15 | 1981-09-15 | C-R-O, Inc. | Narrow gap welding apparatus | 
        
          | FR2456586A1
              (fr)
            
            * | 1979-05-16 | 1980-12-12 | Framatome Sa | Procede d'assemblage final d'une cuve de reacteur nucleaire | 
        
          | DE3220242A1
              (de)
            
            * | 1982-05-28 | 1983-12-01 | Siemens AG, 1000 Berlin und 8000 München | Engspaltschweisskopf | 
        
          | US4481402A
              (en)
            
            * | 1982-09-27 | 1984-11-06 | Aluminum Company Of America | Multi-position plate welding using modified double-J joint | 
        
          | DE3300628A1
              (de)
            
            * | 1983-01-11 | 1983-07-14 | Erwin-Helmut 5276 Wiehl Günther | Brennereinrichtung fuer die narrow-gap-schweissung | 
        
          | US4564135A
              (en)
            
            * | 1983-12-29 | 1986-01-14 | Rca Corporation | Chip carrier soldering tool | 
        
          | JPS62150120U
              (cs)
            
            * | 1986-03-17 | 1987-09-22 |  |  | 
        
          | CH678074A5
              (en)
            
            * | 1988-06-23 | 1991-07-31 | Oerlikon Buehrle Schweisstech | Electroslag welding railway lines - involves filling hollow between rail ends and surrounding cooled two=part mould using fusible electrode guide tube | 
        
          | US5670072A
              (en)
            
            * | 1994-04-22 | 1997-09-23 | General Electric Company | Method and apparatus for joining metal components with mitigation of residual stresses | 
        
          | FR2756466B1
              (fr)
            
            * | 1996-11-29 | 1998-12-31 | Air Liquide | Procede et dispositif d'inertage d'une cuve a liquide alimentaire, notamment a vin, et gaz d'inertage correspondant | 
        
          | NL1011223C2
              (nl)
            
            * | 1999-02-05 | 2000-08-10 | Allseas Group Sa | Werkwijze en inrichting voor het aan elkaar lassen van twee pijpen. | 
        
          | AT505575B1
              (de)
            
            * | 2007-08-03 | 2009-05-15 | Inocon Technologie Gmbh | Schweissvorrichtung mit nahtverfolgungssystem | 
        
          | FR2941160A1
              (fr)
            
            * | 2009-01-22 | 2010-07-23 | Air Liquide | Torche de soudage a l'arc des preparations de joints etroits | 
        
          | JP5792712B2
              (ja)
            
            * | 2009-04-01 | 2015-10-14 | エーエスアーベー アーベー | アーク溶接システムのための溶接ヘッドおよび溶接ヘッドアセンブリ | 
        
          | US20100255335A1
              (en)
            
            * | 2009-04-07 | 2010-10-07 | Crc-Evans Pipeline International, Inc. | Configuration of and welding procedures applied to cruet shaped bevels in objects to be welded | 
        
          | US20110132877A1
              (en)
            
            * | 2009-12-09 | 2011-06-09 | Lincoln Global, Inc. | Integrated shielding gas and magnetic field device for deep groove welding | 
        
          | JP5400696B2
              (ja)
            
            * | 2010-04-26 | 2014-01-29 | 株式会社神戸製鋼所 | 消耗電極式ガスシールドアーク溶接方法および消耗電極式ガスシールドアーク溶接システム | 
        
          | US9839970B2
              (en)
            
            * | 2010-12-21 | 2017-12-12 | Lincoln Global, Inc. | Dual wire welding system and method | 
        
          | US20140042140A1
              (en)
            
            * | 2012-08-13 | 2014-02-13 | General Electric Company | Welding process for repair of thick sections | 
        
          | DE102017204919A1
              (de)
            
            * | 2017-03-23 | 2018-10-18 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung eines Werkstückverbundes und Werkstückverbund | 
        
          | US10532418B2
              (en) | 2017-08-08 | 2020-01-14 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing contact tip and diffuser | 
        
          | US10792752B2
              (en) | 2017-08-08 | 2020-10-06 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system and method | 
        
          | US11440121B2
              (en) | 2017-08-08 | 2022-09-13 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system and method | 
        
          | US11504788B2
              (en) | 2017-08-08 | 2022-11-22 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system and method | 
        
          | US10773335B2
              (en) | 2017-08-08 | 2020-09-15 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system and method | 
        
          | US11285557B2
              (en) | 2019-02-05 | 2022-03-29 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system | 
        
          | US11498146B2
              (en) | 2019-09-27 | 2022-11-15 | Lincoln Global, Inc. | Dual wire welding or additive manufacturing system and method | 
        
          | US12168268B2
              (en) | 2021-05-20 | 2024-12-17 | Lincoln Global, Inc. | Reduction of droplet size for CO2 shielded welding wire | 
        
          | WO2023189026A1
              (ja)
            
            * | 2022-03-31 | 2023-10-05 | Jfeスチール株式会社 | 狭開先ガスシールドアーク溶接方法および狭開先ガスシールドアーク溶接用溶接装置 | 
        
          | EP4501513A1
              (en)
            
            * | 2022-03-31 | 2025-02-05 | JFE Steel Corporation | Narrow gap gas-shielded arc welding method and welding apparatus for narrow gap gas-shielded arc welding |