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Leon M. Hake
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Perry, OK, US
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Patents Grants
last 30 patents
Information
Patent Grant
Steering assembly for machine with working implement
Patent number
5,385,213
Issue date
Jan 31, 1995
Leon Hake
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
Information
Patent Grant
Clamp assembly for removing pins from a concrete form
Patent number
5,065,984
Issue date
Nov 19, 1991
EZ Drill, Inc.
Leon M. Hake
B66 - HOISTING LIFTING HAULING
Information
Patent Grant
Doweling tool
Patent number
4,812,088
Issue date
Mar 14, 1989
Wittwer Construction Co., Inc.
Leon M. Hake
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
Information
Patent Grant
Backhoe-mounted shear
Patent number
4,058,915
Issue date
Nov 22, 1977
Wittwer Construction Company
Leon M. Hake
E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Patents Applications
last 30 patents
Information
Patent Application
Three-wheeled recreational vehicle
Publication number
20020175014
Publication date
Nov 28, 2002
Leon Hake
B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS