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Created with Raphaël 2.1.0 13.02.1996 Formal examination (assignment of filing date) 30.11.1996 Publication of the decision of grant (B1) 31.05.1997 Completion of the opposition filing period 31.07.1997 Issuance of patent (C2) 11.11.2003 Publication of expiration of the patent

Patent expired


(11)Number of the document605
(21)Number of the application96-0112
(22)Filing date of the application1996.02.13
 Date of filing the request for examination (de fond) 13.02.1996
(71)Name(s) of applicant(s), code of the countryUNGUREANU Victor, MD;
(72)Name(s) of inventor(s), code of the countrySVIRCEVSCHII Arcadii, MD; UNGUREANU Victor, MD;
(73)Name(s) of owner(s), code of the countryUNGUREANU Victor, MD;
(54)Title of the inventionAlternating current power source for arc welding
(13)Kind-of-document code
C2, BOPI 08/1997
B1, BOPI 11/1996
(51)International Patent Classification B23K 9/00 (2006.01);
(19)CountryMD
(45)Date of publication of patent granting decision:1996.11.30
(47)Date of issuance of patent1997.07.31
 Expired patents; Date of expiration2005.04.30
 Payment for maintenance up to the date2003.11.11
(30*)Priority of the former USSR application3661788/25-27, 1983.11.11, SU
(10*)Title of protection of the former USSR1358222, SU
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