Front leaf surfaces for a questions and answers booklet

Details Front leaf surfaces for a questions and answers booklet Front leaf surfaces for a questions and answers booklet

1997-05-28

1999-08-24

Holtje, Martie K.

Office supplies; artists and teachers materials

Book, album or cover

Element or attachment

D19 1, 1904

Patent

active

D04131444

REFERENCES:
patent: D30888 (1899-05-01), Parsons
patent: D212922 (1968-12-01), Klosterman
patent: 235448 (1880-12-01), Newman
patent: 3028178 (1962-04-01), Pietrangeli et al.
patent: 3145481 (1964-08-01), Aldershof
patent: 3230641 (1966-01-01), Sloves
patent: 3417491 (1968-12-01), Marks
patent: 4487430 (1984-12-01), Bernardin
patent: 4907904 (1990-03-01), Baldwin

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