Bruce G. Barton

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Livonia, MI, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus for forming unlined passages through concrete walls
- Patent number 6,149,121
- Issue date Nov 21, 2000
- Bruce G. Barton
- E04 - BUILDING
Information Patent Grant
System for forming lined passages through concrete walls
- Patent number 5,509,240
- Issue date Apr 23, 1996
- Bruce G. Barton
- E04 - BUILDING
Information Patent Grant
Extendable wall sleeves
- Patent number 5,182,885
- Issue date Feb 2, 1993
- Thunderline Corporation
- Bruce G. Barton
- E04 - BUILDING
Information Patent Grant
Wall sleeves
- Patent number 4,625,940
- Issue date Dec 2, 1986
- Thunderline Corporation
- Bruce G. Barton
- E04 - BUILDING