Perpetual wall calendar

Details Perpetual wall calendar Perpetual wall calendar

1986-07-08

1989-07-25

Dunkins, Bruce W.

Office supplies; artists and teachers materials

Calendar or calendar holder

Perpetual

D19 20

Patent

active

D03024415

REFERENCES:
patent: D142431 (1945-09-01), Lewis
patent: 1971854 (1934-08-01), Gould
patent: 3864859 (1975-02-01), Kaufman
patent: 4285148 (1981-08-01), Kolar
The New York Times, Thursday, Oct. 16, 1986, p. C-3, see photo of Calendar lower center.

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