Hamilton; Douglas D.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hamilton; Douglas D..The latest application filed is for "apparatus to stabilize a cut tree in the vertical position during movement by a feller-buncher".
- Hamilton; Douglas D. - Mount Royal CA
- Hamilton; Douglas D. - Town of Mount Royal Quebec CA
- Hamilton; Douglas D. - Montreal Quebec H3S 1Z1 CA
| Patent | Date |
|---|---|
| Apparatus to stabilize a cut tree in the vertical position during movement by a feller-buncher Grant 5,377,730 - Hamilton January 3, 1 | 1995-01-03 |
| Tree felling head with combination tree accumulator and tree abutment Grant 5,161,588 - Hamilton November 10, 1 | 1992-11-10 |
| Boom mounted type tree processing head and mounting therefore Grant 5,129,438 - Hamilton July 14, 1 | 1992-07-14 |
| Force matching tree shear Grant 5,044,409 - Hamilton September 3, 1 | 1991-09-03 |
| Hydrodynamic swing damper and tree handling vehicle incorporating the same Grant 5,026,248 - Hamilton June 25, 1 | 1991-06-25 |
| Felling head Grant 5,004,026 - MacLennan , et al. April 2, 1 | 1991-04-02 |
| Rim driven rotary cutter and tree felling head incorporating the same Grant 4,690,185 - Hamilton , et al. September 1, 1 | 1987-09-01 |
| Tree felling head having a rim driven rotary cutter Grant 4,593,733 - Hamilton June 10, 1 | 1986-06-10 |
| Felling head Grant 3,920,057 - Hamilton , et al. November 18, 1 | 1975-11-18 |
| Tree Feed Roll Assembly Grant 3,724,518 - Zehavi , et al. April 3, 1 | 1973-04-03 |
| Feller Buncher Including Double Bunk Trailer Grant 3,658,104 - Hamilton April 25, 1 | 1972-04-25 |
| Tree-bunching Mechanism And Tree-skidder Vehicle Incorporating The Same Grant 3,630,243 - Hamilton , et al. December 28, 1 | 1971-12-28 |
| Delimber Cutters, Delimber And Tree Processing Feed Means Grant 3,596,690 - Hamilton , et al. August 3, 1 | 1971-08-03 |
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