Joseph F. Riehlmann

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New Orleans, LA, US

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Patents Grantslast 30 patents

Information Patent Grant
Collapsible ladder assembly suitable for use as fire escape
- Patent number 3,997,026
- Issue date Dec 14, 1976
- Joseph F. Riehlmann
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
Information Patent Grant
Collapsible ladder suitable for use as fire escape
- Patent number 3,946,833
- Issue date Mar 30, 1976
- Joseph F. Riehlmann
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS