Card – picture – or sign exhibiting – Calendars
Patent
1974-06-10
1976-08-10
Pitrelli, John F.
Card, picture, or sign exhibiting
Calendars
40 28C, 4010622, G09F 1324
Patent
active
039733408
ABSTRACT:
Method and apparatus for creating a visual display is provided in which one or more conduits are provided in which immiscible fluids are placed for creating a predetermined visual pattern.
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patent: 3058245 (1962-10-01), Pieters
patent: 3238452 (1966-03-01), Schmitt et al.
patent: 3578777 (1971-05-01), De Gain
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