Ergonomic chair

Details Ergonomic chair Ergonomic chair

1985-09-18

1986-10-21

Zugel, Francis K.

Chairs and seats

Back movement resiliently opposed in operating position

297287, 297294, A47C 300

Patent

active

046181857

ABSTRACT:
An ergonomic chair comprising:

REFERENCES:
patent: 196126 (1877-10-01), Petterson
patent: 1377600 (1921-05-01), Prest
patent: 2135833 (1938-11-01), Oermann
patent: 2273980 (1942-02-01), Moody
patent: 2981315 (1961-04-01), Schaffer

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