Chalkboard chart holder

Details Chalkboard chart holder Chalkboard chart holder

1988-01-04

1989-05-16

Machado, Reinaldo P.

Supports

Brackets

Specially mounted or attached

211 45, 211 89, 2483165, 2483168, A47B 6302

Patent

active

048303224

ABSTRACT:
A chalkboard chart holder (10) includes at least two spring-loaded, normally-closed, hand-openable, clamp assemblies (12) having permanent magnets (14) thereon mounted on an elongated support member (16). The chalkboard chart holder can be attached to a ferromagnetic chalkboard (68) by the magnets on the clamps so as to hold a chart (72) in the clamps on the chalkboard.

REFERENCES:
patent: 60351 (1866-12-01), Fisher
patent: 605332 (1898-06-01), Owen
patent: 2400058 (1946-05-01), Concannon
patent: 2553668 (1948-08-01), Morello
patent: 2580193 (1951-12-01), Richterkessing
patent: 2622300 (1952-12-01), Marziani
patent: 2977082 (1961-03-01), Harris
patent: 3306308 (1967-02-01), Shanok et al.
patent: 3416761 (1968-12-01), Shanok et al.
patent: 3756550 (1973-09-01), Kollitz
patent: 4108413 (1978-08-01), Goserud
patent: 4255837 (1981-03-01), Holtz

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