Desk calculator with perpetual calendar

Details Desk calculator with perpetual calendar Desk calculator with perpetual calendar

1999-10-26

2000-06-27

Holtje, Martie K.

Office supplies; artists and teachers materials

Calendar or calendar holder

Combined

D19 25, D18 2, D10 2, D10 3, 1903

Patent

active

D04272374

REFERENCES:
patent: D116453 (1939-09-01), Trollen
patent: D147742 (1947-10-01), Bowers
patent: D163586 (1951-06-01), Dingeldein
patent: D182405 (1958-04-01), Elliott
patent: D292715 (1987-11-01), Hill
patent: D382007 (1997-08-01), Peersmann
patent: D383778 (1997-09-01), Greenwood
patent: D410251 (1999-05-01), Murrell
patent: 2782539 (1957-02-01), Baker
patent: 2829457 (1958-04-01), Marston

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