Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9863107 | Rotor and rotor housing for a snowthrower | Philip G. Stalpes, Derek S. Duchscherer, Nicholas J. Wersal | 2018-01-09 |
| D786940 | Snowthrower power head | Philip C. Dretzka, David J. Martin, Nicholas J. Wersal, Derek S. Duchscherer | 2017-05-16 |
| 9556572 | Self-propelled, single-stage snowthrower | Derek S. Duchscherer, Nicholas J. Wersal, Philip G. Stalpes | 2017-01-31 |
| 9546462 | Rotor and rotor housing for a snowthrower | Philip G. Stalpes, Derek S. Duchscherer, Nicholas J. Wersal | 2017-01-17 |
| D776721 | Snowthrower chute control | David J. Martin, Philip C. Dretzka, Kevin D. Docken | 2017-01-17 |
| 9399846 | Snowthrower and chute rotation control mechanism for use with same | — | 2016-07-26 |
| 7624521 | Snowthrower chute control | Donald M. White, III, Brett P. Yeager | 2009-12-01 |
| 7438300 | Hand truck with pivotal retainer | Jerry J. Zien | 2008-10-21 |
| 7401425 | Snowthrower wheel drive steering system | Donald M. White, III | 2008-07-22 |
| 7201355 | Support bracket for differently sized buckets | Jerry J. Zien | 2007-04-10 |
| 7032333 | Snowthrower chute and deflector control | Donald M. White, III | 2006-04-25 |
| D494193 | Two stage snowthrower | David J. Martin | 2004-08-10 |
| 6585218 | Picture stand | — | 2003-07-01 |
| 6082083 | Ground speed control system | Philip G. Stalpes, Larry W. Schmidt, Richard A. Thorud, Henry B. Tillotson | 2000-07-04 |
| D424578 | Lawn mower control handle | David J. Martin, Anthony N. Pink, Larry W. Schmidt, Philip G. Stalpes | 2000-05-09 |
| 5615542 | Mulching blade for lawn mower | Richard A. Thorud | 1997-04-01 |
| 5485963 | Granular fertilizer spreader | Joseph J. Walto, Floyd D. Niskanen | 1996-01-23 |
| D359963 | Granular fertilizer spreader attachment for lawn mower | Anthony N. Pink, Joseph J. Walto | 1995-07-04 |
| 5208586 | Ultrasonic vehicle positioning apparatus and method | Charles Boulos | 1993-05-04 |
| 5195307 | Simplified blade brake clutch and propulsion control | Richard A. Thorud | 1993-03-23 |
| D308658 | Tire | — | 1990-06-19 |
| 4756101 | Swing wheel snowthrower | Steven J. Svoboda | 1988-07-12 |
| 4361000 | Bagging filament mower | — | 1982-11-30 |