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ELECTRIC ARC PULSING
US 3,518,401 A
Filed
: 10/04/1967
Issued
: 06/30/1970
Est. Priority Date
: 10/04/1967
Status: Expired due to Term
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Current Assignee
ESAB Welding Products Incorporated
Original Assignee
Mathews Howard Hume
Inventors
MATHEWS HOWARD HUME
Application Number
US04/672,862
Time in Patent Office
1,000 Days
Field of Search
US Class Current
219/130.51
CPC Class Codes
B23K 9/091
characterised by the circuits
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