Ralph Luebke

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Memphis, TN, US

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Patents Grantslast 30 patents

Information Patent Grant
Finishing trowel pitch control and clutch system
- Patent number 5,405,216
- Issue date Apr 11, 1995
- Allen Engineering Corporation
- J. Dewayne Allen
- E04 - BUILDING
Information Patent Grant
Polymer concrete paving machine
- Patent number 5,352,063
- Issue date Oct 4, 1994
- Allen Engineering Corporation
- J. Dewayne Allen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Laser operated automatic grade control system for concrete finishing
- Patent number 5,288,166
- Issue date Feb 22, 1994
- Allen Engineering Corporation
- J. Dewayne Allen
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES