Railway crossing signal display

Sales and advertising equipment – Signs or display forms

Patent

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Details

D10109, 2003

Patent

active

D04005937

REFERENCES:
patent: D298146 (1988-10-01), Glover
patent: D316875 (1991-05-01), Momot et al.
patent: D324547 (1992-03-01), Burt
patent: D328763 (1992-08-01), Zaviana et al.
patent: D344983 (1994-03-01), Wegrzyn
patent: D357708 (1995-04-01), Zefeu
patent: D363952 (1995-11-01), Cook
patent: D379200 (1997-05-01), Nelson
patent: 4298869 (1981-11-01), Okuno
patent: 4954822 (1990-09-01), Borenstein
patent: 5136287 (1992-08-01), Borenstein

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