Hatch

Details Hatch Hatch

1992-06-30

1994-06-28

Word, A. Hugo

Building units and construction elements

Prefabricated unit

Closure

Patent

active

D03483169

REFERENCES:
patent: D283548 (1986-04-01), Naka
patent: 2141481 (1938-12-01), Mattingberg
patent: 2312155 (1943-02-01), Flaxman
patent: 2726623 (1955-12-01), Jernstrom
patent: 2970347 (1961-02-01), Massopost
patent: 3130651 (1964-04-01), Werner
patent: 3209663 (1965-10-01), Baier
patent: 3415014 (1968-12-01), Hamilton
patent: 4441278 (1984-04-01), Covey, III
patent: 4443923 (1984-04-01), Naka
patent: 4495731 (1985-01-01), Serno
patent: 4593493 (1986-06-01), Naka et al.
patent: 4665653 (1987-05-01), Franz et al.
patent: 4846089 (1992-07-01), Cedergreen

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