Sheldon; John D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Sheldon; John D..The latest application filed is for "two-stroke engine transfer ports".
- Sheldon; John D. - Anderson SC
- Sheldon; John D. - Chandler AZ
- Sheldon; John D. - Orangeburg SC
- Sheldon; John D. - Charlotte NC
- Sheldon; John D. - Zion IL
| Patent | Date |
|---|---|
| Two-stroke engine transfer ports Grant 7,100,550 - Sheldon , et al. September 5, 2 | 2006-09-05 |
| Two-stroke engine transfer ports App 20040244739 - Sheldon, John D. ; et al. | 2004-12-09 |
| Two-stroke engine transfer ports App 20040065281 - Sheldon, John D. ; et al. | 2004-04-08 |
| Two-stroke engine transfer ports App 20040065280 - Sheldon, John D. ; et al. | 2004-04-08 |
| Flail head for a vegetation cutter Grant 6,249,978 - Sheldon June 26, 2 | 2001-06-26 |
| Lawn mower cutting blade spindle assembly including quick change characteristics Grant 5,960,617 - Sheldon October 5, 1 | 1999-10-05 |
| Lawn mower cutting blade spindle assembly including quick change characteristics Grant 5,782,073 - Sheldon July 21, 1 | 1998-07-21 |
| Combination mower blade Grant 5,473,873 - Sheldon December 12, 1 | 1995-12-12 |
| Combination mower blade Grant 5,284,006 - Sheldon February 8, 1 | 1994-02-08 |
| Air cleaning system of internal combustion engine Grant 4,261,302 - Sheldon April 14, 1 | 1981-04-14 |
| Filament type trimmer Grant 4,253,238 - Sheldon March 3, 1 | 1981-03-03 |
| Filament-type trimmer Grant 4,104,796 - Sheldon , et al. August 8, 1 | 1978-08-08 |
| Engine exhaust gas discharge arrangement Grant 3,946,697 - Hackbarth , et al. March 30, 1 | 1976-03-30 |
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