Chalkboard erasers

Details Chalkboard erasers Chalkboard erasers

1979-05-11

1980-06-17

McCarthy, Edward J.

Brushing, scrubbing, and general cleaning

Implements

Fabric

15210R, B43L 2100

Patent

active

042076463

ABSTRACT:
A chalkboard eraser including an elongated rigid tubular core member and a resilient body member fixed to the core member and disposed about the core member and generally coextensive therewith, the body member having alternate lands and grooves extending lengthwise and disposed about its periphery.

REFERENCES:
patent: 754900 (1904-03-01), Seith
patent: 1487052 (1924-03-01), Enomoto
patent: 3317944 (1967-05-01), Napier
patent: 3986224 (1976-10-01), Yang

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