Letter-opener

Details Letter-opener Letter-opener

1990-12-17

1992-09-15

Ansher, Bernard

Tools and hardware

Other tools and implements

Cutting

Patent

active

D03293688

REFERENCES:
patent: 40163 (1863-10-01), Fitch
patent: D175170 (1955-07-01), Johnson
patent: D240190 (1976-06-01), Cleveland
patent: D256883 (1980-09-01), Wharmby
patent: D306394 (1990-03-01), Koenig
patent: 1553449 (1925-09-01), Kennedy
patent: 2439639 (1948-04-01), Tilly
patent: 2535555 (1950-12-01), Tilly
patent: 2599439 (1952-06-01), Drake
patent: 2610399 (1952-09-01), Adams
patent: 3009248 (1961-11-01), Tilly
patent: 3028670 (1962-04-01), Tilly
patent: 3290780 (1966-12-01), Oehlert
Copy of products available in the market in the Montreal's area, item Nos. 1, 2 and 3, before Dec. 17, 1990.

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