Safe grating door

Details Safe grating door Safe grating door

2000-08-30

2002-05-21

Clark, Doris (Department: 2914)

Building units and construction elements

Prefabricated unit

Closure

Design Patent

active

D0457649

CLAIM:
The ornamental design for a safe grating door, as shown and described.

REFERENCES:
patent: 2574807 (1951-11-01), Woodruff
patent: D422089 (2000-03-01), Bland

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