Machines not elsewhere specified – Heat treatment – welding or brazing – Scientific – laboratory – or industrial heating equipment
Patent
1988-08-05
1991-12-10
Holtje, Nelson C.
Machines not elsewhere specified
Heat treatment, welding or brazing
Scientific, laboratory, or industrial heating equipment
Patent
active
D03222608
REFERENCES:
patent: 3549070 (1987-12-01), Frost
patent: 3873013 (1975-03-01), Stibbe
patent: 3979038 (1976-08-01), Karlsson
patent: 4021931 (1977-05-01), Russ et al.
patent: 4197971 (1980-04-01), Stibbe
patent: 4197973 (1980-04-01), Daane
patent: 4201323 (1980-05-01), Stibbe et al.
patent: 4265384 (1981-05-01), Daane
Davis Antoine D.
Holtje Nelson C.
Jaeger Hugh D.
Lemack Kevin
W. R. Grace & Co.,-Conn.
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