Douglas D. Hamilton

Person

Montreal, Quebec H3S 1Z1, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus to stabilize a cut tree in the vertical position during m...
- Patent number 5,377,730
- Issue date Jan 3, 1995
- Logging Development Corporation
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Tree felling head with combination tree accumulator and tree abutment
- Patent number 5,161,588
- Issue date Nov 10, 1992
- Logging Development Corporation
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Boom mounted type tree processing head and mounting therefore
- Patent number 5,129,438
- Issue date Jul 14, 1992
- Logging Development Corporation
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Force matching tree shear
- Patent number 5,044,409
- Issue date Sep 3, 1991
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Hydrodynamic swing damper and tree handling vehicle incorporating t...
- Patent number 5,026,248
- Issue date Jun 25, 1991
- Logging Development Corporation
- Douglas D. Hamilton
- B66 - HOISTING LIFTING HAULING
Information Patent Grant
Felling head
- Patent number 5,004,026
- Issue date Apr 2, 1991
- Charles MacLennan
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Tree residue processor
- Patent number 4,717,081
- Issue date Jan 5, 1988
- Canadian Patents and Development Limited
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Rim driven rotary cutter and tree felling head incorporating the same
- Patent number 4,690,185
- Issue date Sep 1, 1987
- Logging Development Corporation
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Tree felling head having a rim driven rotary cutter
- Patent number 4,593,733
- Issue date Jun 10, 1986
- Logging Development Corporation
- Douglas D. Hamilton
- B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Harvester processor assembly
- Patent number 4,004,622
- Issue date Jan 25, 1977
- Logging Development Corporation
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Method and apparatus for severing and marking trees
- Patent number 3,970,124
- Issue date Jul 20, 1976
- Logging Development Corporation
- Douglas D. Hamilton
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Douglas D. Hamilton

Person

Patents Grantslast 30 patents

Apparatus to stabilize a cut tree in the vertical position during m...

Tree felling head with combination tree accumulator and tree abutment

Boom mounted type tree processing head and mounting therefore

Force matching tree shear

Hydrodynamic swing damper and tree handling vehicle incorporating t...

Felling head

Tree residue processor

Rim driven rotary cutter and tree felling head incorporating the same

Tree felling head having a rim driven rotary cutter

Harvester processor assembly

Method and apparatus for severing and marking trees