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| 9635801 | Singulating hand planter and fertilizer applicator | Mar 17, 14 | May 02, 17 | THE BOARD OF REGENTS FOR OKLAHOMA STATE UNIVERSITY |
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| 9504196 | Post-hole digger with foot rests | Mar 29, 16 | Nov 29, 16 | Not available |
| 9320188 | Tool blades with multiple cutting edges | May 07, 15 | Apr 26, 16 | Not available |
| 9320187 | Single handled post hole digger | Mar 02, 15 | Apr 26, 16 | DUBIS, CHARLES S., DUBIS, KEVIN T., |
| 9192092 | Reciprocating metering device | Jun 07, 12 | Nov 24, 15 | DREXEL UNIVERSITY |
| 9010818 | Single handle post hole digger | Jul 12, 13 | Apr 21, 15 | DUBIS, KEVIN T. |
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| 8347797 | Seed planting device | Feb 04, 10 | Jan 08, 13 | Not available |
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| 7971541 | Submerged substrate plug cutter and related method | Jul 17, 08 | Jul 05, 11 | STANTEC CONSULTING SERVICES INC. |
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| 7735436 | Granule dispensing tool | Oct 06, 08 | Jun 15, 10 | Not available |
| 7681509 | Subterranean material dispensing apparatus and method | Aug 14, 07 | Mar 23, 10 | B&B INNOVATORS, LLC |