Gregory J. F. Hannay

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Brisbane, AU

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Patents Grantslast 30 patents

Information Patent Grant
Ventilation apparatus
- Patent number 4,578,900
- Issue date Apr 1, 1986
- Crestlite Aluminum Pty. Ltd.
- Gregory J. F. Hannay
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS