Spring devices – Compound
Patent
1973-04-02
1977-07-05
Marbert, James B.
Spring devices
Compound
5351, 297452, 297458, 297455, 128 70, A47C 2502
Patent
active
040335674
ABSTRACT:
A cushioning material system or construction having at least one module comprising balanced levers and displaceable bearing means.
REFERENCES:
patent: 3790150 (1974-02-01), Lippert
Deres Development Corporation
Halle Edward
Marbert James B.
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