Robert T. Frohlich

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Bedford, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Fastener for securing roofing material to cementitious roof decks
- Patent number 4,641,471
- Issue date Feb 10, 1987
- W. R. Grace & Co.
- Kenneth E. Young
- E04 - BUILDING
Information Patent Grant
Fastener for securing roofing material to cementitious roof decks h...
- Patent number 4,641,472
- Issue date Feb 10, 1987
- W. R. Grace & Co.
- Kenneth E. Young
- E04 - BUILDING
Information Patent Grant
Fastener for securing roofing material to cementitious roof decks h...
- Patent number 4,627,207
- Issue date Dec 9, 1986
- W. R. Grace & Co.
- Kenneth E. Young
- E04 - BUILDING
Information Patent Grant
Ventilated insulated roofing system
- Patent number 4,189,886
- Issue date Feb 26, 1980
- W. R. Grace & Co.
- Robert T. Frohlich
- E04 - BUILDING