Printing and office machinery – Bookbinding or document cutting – trimming – or shredding machine – Cutter – trimmer – or shredder
Patent
1979-09-04
1981-10-27
Spangler, Robert C.
Printing and office machinery
Bookbinding or document cutting, trimming, or shredding machine
Cutter, trimmer, or shredder
D1804
Patent
active
D02615290
REFERENCES:
patent: D233559 (1974-11-01), Estes
patent: D238000 (1975-12-01), Patla
patent: D246204 (1977-10-01), Balmer
patent: 1346179 (1920-07-01), Crippen
patent: 3879783 (1975-04-01), Giulie
patent: 3992741 (1976-11-01), Staats
patent: 3994035 (1976-11-01), Elder et al.
General Binding Corporation
Spangler Robert C.
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