Method of making door frames

Details Method of making door frames Method of making door frames

1994-09-19

1995-04-25

Bryant, David P.

Metal working

Method of mechanical manufacture

Structural member making

294031, 29412, B23P 1700

Patent

active

054087481

ABSTRACT:
The method of making a plurality of door frames from a single slab of metallic sheet material. The largest size door frame is first produced from a slab of material separating such from this slab of material. Then producing a second size of door frame from the remaining section of the slab of material where the second size is of a smaller configuration than the first size. Both door frames are each a single integral unit. There may be produced a third size of door frame from the remaining slab of material and possibly even a fourth size.

REFERENCES:
patent: 5361476 (1994-11-01), Leopold

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