Joseph Quinn

Follow

Person

Kearny, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Device for converting an extension ladder into a stepladder
- Patent number 4,043,423
- Issue date Aug 23, 1977
- Norman Elias
- E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS