Double edged envelope opener

Tools and hardware – Other tools and implements – Cutting

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D03652670

REFERENCES:
patent: D306394 (1990-03-01), Koenig
patent: D329584 (1992-09-01), Shevin et al.
patent: D350770 (1994-09-01), Carney et al.
patent: 3028670 (1962-04-01), Tilly
patent: 5127162 (1992-07-01), Mansfield
patent: 5285577 (1994-02-01), Carney et al.
Quick Point 1967 Catalog, p. 10.
Quick Point Jan. 1965 Catalog.
Quick Point 1992 Catalog, pp. 21-22.
Quick Point 1990 Catalog, pp. 52-53.
Quick Point 1981 Catalog.

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