EP 3 800 002 A1 Europäisches Patentamt European P. . ee des brevets’ EUROPEAN SEARCH REPORT Application Number EP 20 19 9919 DOCUMENTS CONSIDERED TO BE RELEVANT US 2019/255652 Al (IZUMI TAKASHI [JP]) INV. 22 August 2019 (2019-08-22) B23K26/146 * paragraph [0020] - paragraph [0027]; B23K26/36 figures 1,2A-2B,3A-3B,4A-4B * BO8B7 /00 * paragraph [0031] - paragraph [0036] * B23K26/073 B23K26/14 US 3 696 230 A (FRIEDRICH HOWARD R) B23K26/142 3 October 1972 (1972-10-03) E01B31/12 * column 2, line 35 - column 4, line 36; figures 1,2,3 * ADD. B23K101/26 JP S60 27487 A (MATSUSHITA ELECTRIC IND CO LTD) 12 February 1985 (1985-02-12) * abstract; figure 5 * EP 1 629 935 Al (ALSTOM TECHNOLOGY LTD [CH]) 1 March 2006 (2006-03-01) * paragraph [0010] - paragraph [0011] * HOFFMANN D ET AL:  "HOCHGESCHWINDIGKEITS-REINIGUNG VON TECHNICAL FIELDS SCHIENENOBERFLAECHEN MITTELS SEARCHED (IPC) LASERSTRAHLUNG//HIGH-SPEED CLEANING OF B23K RAIL SURFACES BY LASER BO8B RADIATION//NETTOYAGE A GRANDE VITESSE DE EO1B LA SURFACE DES RAILS PAR RAYON LASER ", EB- ELEKTRISCHE BAHNEN, DIV-DEUTSCHER INDUSTRIEVERLAG, DE, vol. 102, no. 8/09, 1 August 2004 (2004-08-01), pages 383-388, XPO01201814, ISSN: 0013-5437 * paragraph [0002] - paragraph [0003]; figures 1,4,6-8,13-14 * -/-- The present search report has been drawn up for all claims Place of search Date of completion of the search Examiner Munich 11 February 2021 Jeggy, Thierry CATEGORY OF CITED DOCUMENTS T : theory or principle underlying the invention E: earlier patent document, but published on, or X: particularly relevant if taken alone after the filing date Y : particularly relevant if combined with another D: document cited in the application document of the same category L: document cited for other reasons A: technological background O: non-written disclosure & : member of the same patent family, corresponding P : intermediate document document page 1 of 2 EPO FORM 1503 03.82 (P04C01) Re 17