Digital teaching clock

Details Digital teaching clock Digital teaching clock

1994-10-14

1996-04-09

Harrison, Jessica J.

Education and demonstration

Telling time or calendar reading

G09B 1912

Patent

active

055056245

ABSTRACT:
A digital teaching clock has a base member, an analog clock face on the base member, a digital clock face on the base member with display elements, placards for mounting on the display elements, and fastener strips for detachably mounting the placards on the display elements. A student sets a time on the analog clock then attaches placards on the display elements to form a numerical equivalent of the time of day in digital format.

REFERENCES:
patent: 2040421 (1936-05-01), Almquist
patent: 3973339 (1976-10-01), Ueda
patent: 4015346 (1977-04-01), Ogasawara
patent: 4128949 (1978-12-01), Marasen, Jr. et al.
patent: 4427390 (1984-01-01), Manager
patent: 4478417 (1984-10-01), Shanud-Deen
patent: 4731025 (1988-03-01), Taylor
patent: 4799890 (1989-01-01), Thompson et al.
patent: 4979155 (1990-12-01), Tung
patent: 5282616 (1994-02-01), Stacavich

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