Machines not elsewhere specified – Heat treatment – welding or brazing – Solid material melting – e.g. – solder – etc.
Patent
1981-04-28
1983-11-29
Bullock, B. J.
Machines not elsewhere specified
Heat treatment, welding or brazing
Solid material melting, e.g., solder, etc.
D3100
Patent
active
D02715880
REFERENCES:
patent: D33953 (1901-01-01), Weiler
patent: 1061467 (1913-05-01), Gathmann
patent: 2174562 (1939-10-01), Berg
patent: 2720967 (1955-10-01), Wilson
patent: 2812573 (1957-11-01), May
Bakken Christian S.
Ronhaug Jan B.
Bullock B. J.
Norsk Hydro a.s.
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