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Download bubble and scoop7/9/2023 ![]() ![]() Google Patents US4775348A - Bubble machineÄownload PDF Info Publication number US4775348A US4775348A US07/003,293 US329387A US4775348A US 4775348 A US4775348 A US 4775348A US 329387 A US329387 A US 329387A US 4775348 A US4775348 A US 4775348A Authority US United States Prior art keywords housing bubble walls air stream bubbles Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.
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