Robert D. Sawyer

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Milwaukee, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Foundation wall construction having water impervious drain panels
- Patent number 6,279,275
- Issue date Aug 28, 2001
- Robert D. Sawyer
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Foundation wall construction
- Patent number 5,857,297
- Issue date Jan 12, 1999
- Robert D. Sawyer
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Concrete forming member for use in concrete casting
- Patent number 5,098,059
- Issue date Mar 24, 1992
- Robert D. Sawyer
- E04 - BUILDING
Information Patent Grant
Spring-loaded locking pin for concrete forms
- Patent number 5,083,740
- Issue date Jan 28, 1992
- Robert D. Sawyer
- E04 - BUILDING
Information Patent Grant
Apparatus for forming an expanded foam form liner including a conto...
- Patent number 4,536,145
- Issue date Aug 20, 1985
- Tom Sawyer Supply & Equipment
- Robert D. Sawyer
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Concrete construction form and tie rod
- Patent number 4,239,173
- Issue date Dec 16, 1980
- Robert D. Sawyer
- E04 - BUILDING
Information Patent Grant
Concrete construction form panel
- Patent number 4,150,808
- Issue date Apr 24, 1979
- Robert D. Sawyer
- E04 - BUILDING