Frank B. Leslie

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Niagara Falls, Ontario L2E 6S6, CA

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Patents Grantslast 30 patents

Information Patent Grant
Web ladder release mechanism
- Patent number 4,243,121
- Issue date Jan 6, 1981
- Alexander S. Kiss
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Collapsed web ladder
- Patent number D254394
- Issue date Mar 4, 1980
- Frank B. Leslie
- D25 - Building units and construction elements
Information Patent Grant
Web ladder
- Patent number 4,189,030
- Issue date Feb 19, 1980
- Frank B. Leslie
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS