Shutter sign

Details Shutter sign Shutter sign

1989-09-06

1991-07-30

Burke, Wallace R.

Sales and advertising equipment

Signs or display forms

D20 42

Patent

active

D03186920

REFERENCES:
patent: 1142777 (1915-06-01), Star
patent: 1203712 (1916-11-01), Dietz
patent: 1358534 (1920-11-01), Finch
patent: 2229877 (1941-01-01), Walley
patent: 2510331 (1950-06-01), Crosby
patent: 2627795 (1953-02-01), Murphy
patent: 2880537 (1959-04-01), Cygan
patent: 3748767 (1973-07-01), Giesecke
patent: 3769727 (1973-11-01), Kent, Jr.
patent: 3914890 (1975-10-01), Behlen, Jr.
patent: 3991495 (1976-11-01), Wilson
patent: 4217713 (1980-08-01), Greenberger
Signs of the Times Jan. 1986, p. 86, lower left corner Model #4A E-Z slide sign.

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