Key for building blocks

Details Key for building blocks Key for building blocks

1992-08-27

1994-02-08

Word, A. Hugo

Tools and hardware

Fastener, support or mount not elsewhere specified

Fastener or coupling

D25116

Patent

active

D03440133

REFERENCES:
patent: D337721 (1993-02-01), Hodel
patent: 2933920 (1960-04-01), Steuler
patent: 3099110 (1963-07-01), Spaight
patent: 3217457 (1965-11-01), Naar
patent: 3461631 (1969-08-01), Brugnola
patent: 3668831 (1972-06-01), Sweet et al.
patent: 4512685 (1985-04-01), Hegle
patent: 4684294 (1987-08-01), O'Neill
patent: 4741136 (1988-05-01), Thompson
patent: 4815897 (1989-03-01), Risi et al.
patent: 4896999 (1990-01-01), Ruckstuhl

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