Hollow barrier

Details Hollow barrier Hollow barrier

1997-01-09

1998-03-03

Jackson, Marcus A.

Measuring, testing, or signalling instruments

Security or signal instrument or casing

Visual

D25 44, 1005

Patent

active

D03915131

REFERENCES:
patent: D110894 (1938-08-01), Hawk
patent: D341098 (1993-11-01), Ejodock
patent: D343369 (1994-01-01), Sprague
patent: 1065231 (1913-06-01), Finger

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