Combined balloon and card ballast

Office supplies; artists and teachers materials – Paper or pasteboard for writing or printing – Combined

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D03715744

REFERENCES:
patent: D13312 (1882-09-01), Davis
patent: D68320 (1925-09-01), Lee
patent: D336037 (1993-06-01), Lippens
patent: 2510551 (1950-06-01), Cardillo
patent: 2830923 (1958-04-01), Kizzek
patent: 3250241 (1966-05-01), Levy et al.
patent: 4584213 (1986-04-01), Rentowl
patent: 4813902 (1989-03-01), Messer
patent: 4879823 (1989-11-01), Collins
patent: 5024011 (1991-06-01), Collins
patent: 5035391 (1991-07-01), Steele et al.

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