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Patent applications and USPTO patent grants for Alderson; Peggy I..The latest application filed is for "removable support legs for use with gold prospecting sluice".
Patent | Date |
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Equipment for use in the extraction of placer gold from gravel and sand deposits Grant 9,132,431 - Alderson , et al. September 15, 2 | 2015-09-15 |
Removable support legs for use with gold prospecting sluice Grant 08616379 - | 2013-12-31 |
Removable support legs for use with gold prospecting sluice Grant 8,616,379 - Alderson , et al. December 31, 2 | 2013-12-31 |
Removable support legs for use with gold prospecting sluice App 20110186486 - Alderson; Larry Allen ;   et al. | 2011-08-04 |
Equipment for use in the extraction of placer gold from gravel and sand deposits App 20100193406 - Alderson; Larry Allen ;   et al. | 2010-08-05 |
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