Douglas B. Malchow

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Minneapolis, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Scraper tool
- Patent number 5,095,573
- Issue date Mar 17, 1992
- Warner Manufacturing Company
- David R. Henke
- B44 - DECORATIVE ARTS
Information Patent Grant
Wallcovering kit apparatus and method
- Patent number 4,834,237
- Issue date May 30, 1989
- Warner Manufacturing Company
- David R. Henke
- B44 - DECORATIVE ARTS
Information Patent Grant
Holder for detachable blades
- Patent number 3,996,665
- Issue date Dec 14, 1976
- Warner Manufacturing Company
- Douglas B. Malchow
- B26 - HAND CUTTING TOOLS CUTTING SEVERING