Double torsion coil spring

Details Double torsion coil spring Double torsion coil spring

1998-03-27

1999-10-05

Seeger, Janice E.

Furnishings

Furniture, freestanding support, or frame therefor

Element

0606

Patent

active

D04146328

REFERENCES:
patent: 442063 (1890-12-01), Locke
patent: 688413 (1901-12-01), Harrison
patent: 723874 (1903-03-01), Howell
patent: 1055662 (1913-03-01), Scheible
patent: 4778157 (1988-10-01), Thomas

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