Self-adjusting book mark

Details Self-adjusting book mark Self-adjusting book mark

1986-09-08

1990-04-24

Vales-Lado, Carmen H.

Office supplies; artists and teachers materials

Bookend

D19 65

Patent

active

D03074412

REFERENCES:
patent: D297334 (1988-08-01), Trent
patent: D298549 (1988-11-01), Lepper
patent: 593683 (1897-11-01), Pancoast, Jr.
patent: 2717572 (1955-09-01), Kingman

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