Stanowy Patent
US4258920 (A)
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Original document Cited documents Citing documents INPADOC legał status INPADOC patent family
Bibliographic data: US4258920 (A) - 1981-03-31
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Page bookmark |
US4258920 fA) - Maanetic iiasaw puzzle |
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lnventor(s): |
WALDRON DON C; WALDRON PHANOY + |
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Applicant(s): |
WALDRON DON C; WALDRON PHANOY + |
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Classification: |
- international: A63F9/10; (IPC1-7): A63F9/10 |
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-European: A63F9/10 | |
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Application number: |
US1978092921819780731 |
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Priority number(s): |
US1978092921819780731 |
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A magnetic jigsaw puzzle wherein eitherthe playing boardorthe playpieces are magnetized and the other is metallic. The method of making magnetized pieces or board comprises mixing iron filings, shredded paper and water with a rust inhibitor in the form of a zinc salt to form a slurry, rolling the slurry, drying the wet mass; printing on the dried sheet; die cutting and packaging.
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