Ball-point pen

Details Ball-point pen Ball-point pen

1992-07-14

1993-12-14

Holtje, Nelson C.

Textiles: fiber preparation

Liberating

Ginning

D19 46, D19 51

Patent

active

D03422771

REFERENCES:
patent: D22413 (1893-05-01), Kraus
patent: D22414 (1893-05-01), Kraus
patent: D22415 (1893-05-01), Kraus
patent: D47852 (1915-09-01), Kulow
patent: D61041 (1922-06-01), Jones
patent: D163779 (1951-06-01), Ulvad
patent: D172025 (1954-04-01), Hopstein
patent: D224846 (1972-09-01), Feuer
patent: D328310 (1992-07-01), Yoshinaga
patent: 4468146 (1984-08-01), Tabachnik

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