Textile or paper yard goods; sheet material – Perforated or openwork panel material
Patent
1994-03-21
1995-07-25
Douglas, Alan P.
Textile or paper yard goods; sheet material
Perforated or openwork panel material
Patent
active
D03605310
REFERENCES:
patent: 1372741 (1921-03-01), Dickinson
patent: 1637410 (1927-08-01), Coryell
patent: 2373931 (1945-04-01), Upham
patent: 2977265 (1961-03-01), Forsberg et al.
Boys Donald R.
Douglas Alan P.
Spear R.
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