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Delano H. Ristow
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Kiel, WI, US
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Patents Grants
last 30 patents
Information
Patent Grant
Waterproof roof
Patent number
5,094,043
Issue date
Mar 10, 1992
Delano H. Ristow
E04 - BUILDING
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Patent Grant
Termination bar and splice for rubberized roofing sheets
Patent number
4,996,801
Issue date
Mar 5, 1991
Delano H. Ristow
E04 - BUILDING
Information
Patent Grant
Tool for seating tubing in a concealed roofing base rail
Patent number
4,977,659
Issue date
Dec 18, 1990
Delano H. Ristow
B25 - HAND TOOLS PORTABLE POWER-DRIVEN TOOLS MANIPULATORS
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Patent Grant
Waterproof roof
Patent number
4,519,172
Issue date
May 28, 1985
Delano H. Ristow
E04 - BUILDING