1976-04-22
1977-06-07
Keenan, Michael J.
113 58, B21D 3700
Patent
active
040276112
ABSTRACT:
A seam forming apparatus for forming standing seams to interconnect pairs of adjacent metallic panels.
REFERENCES:
patent: 3528167 (1970-09-01), Lipp
patent: 3771482 (1973-11-01), Thompson
patent: 3797430 (1974-03-01), Boudreau
patent: 3875642 (1975-04-01), Knudson
Buffenbarger John K.
Ward Donald H.
Armco Steel Corporation
Keenan Michael J.
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