Card file

Details Card file Card file

1991-12-26

1993-05-11

Holtje, Nelson C.

Office supplies; artists and teachers materials

Office equipment not elsewhere specified

Holder or file

D19 86, D19 90, D19 95

Patent

active

D03355047

REFERENCES:
patent: D226880 (1973-05-01), Wetmore
patent: D227811 (1973-07-01), McFarland
patent: D266336 (1982-09-01), Leib, III
patent: D287861 (1987-01-01), Husbands
patent: D302702 (1989-08-01), Goertz
patent: D328103 (1992-07-01), Ambasz
patent: 2472567 (1949-06-01), Bruen
patent: 4192425 (1980-03-01), Landau et al.
patent: 4534475 (1985-08-01), Mayo

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