Chair construction
United States Patent 2988398
US Patent References:
Chair
- - 2260976

Back rest for chairs
- - 2360788

Resiliently pivoted back rest
- - 2547455

Posture chair
- - 2599301

Adjustable mechanism for posture chairs
- - 2680474


Inventors:
Hamilton, Earl F.
Publication Date:
06/13/1961
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Assignee:
HAMILTON COSCO INC
Primary Class:
297/383
Other Classes:
297/303.500, 297/353, 297/300.700
International Classes:
A47C7/44; A47C7/40
US Patent References:
2692012Adjustable chair back pivoted above seat
2703601Back rest supporting structure for chairs