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Larry M. Delfs
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Waterloo, IA, US
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last 30 patents
Information
Patent Grant
Brake valve with prefill chamber unloading valve
Patent number
5,394,701
Issue date
Mar 7, 1995
Deere & Company
Douglas M. Durant
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Supply valve arrangement for closed center hydraulic system
Patent number
5,245,827
Issue date
Sep 21, 1993
Deere & Company
Douglas M. Durant
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Selective control valve used to operate implements attached to a tr...
Patent number
D326709
Issue date
Jun 2, 1992
Deere & Company
Douglas M. Durant
D23 - Environmental heating and cooling
Information
Patent Grant
Female hydraulic coupler with push-connect and lever disconnect
Patent number
4,881,573
Issue date
Nov 21, 1989
Deere & Company
Douglas M. Durant
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Motor seal protector valve
Patent number
4,713,936
Issue date
Dec 22, 1987
Deere & Company
Dennis R. Barber
F15 - FLUID-PRESSURE ACTUATORS HYDRAULICS OR PNEUMATICS IN GENERAL
Information
Patent Grant
Auxiliary hydrostatic drive system
Patent number
4,696,367
Issue date
Sep 29, 1987
Deere & Company
Larry M. Delfs
B60 - VEHICLES IN GENERAL
Information
Patent Grant
Force control system including bypass flow path for implement with...
Patent number
4,630,526
Issue date
Dec 23, 1986
Deere & Company
Ronnie F. Burk
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING